AS1313
Ultra Low Quiescent Current, DC-DC
Step Down Converter
General Description
The AS1313 is an ultra-low quiescent current hysteretic
step-down DC-DC converter optimized for light loads and with
efficiencies of up to 95%.
AS1313 operates from a 2.4V to 5.5V supply and supports
output voltages between 1.2V and 3.6V. Besides the available
AS1313 standard variants, any variant with output voltages in
50mV steps are available.
In order to save power the AS1313 features a shutdown mode,
where it draws less than 100nA. During shutdown mode the
battery is disconnected from the output.
In light load operation, the device enters an idle mode when
most of the internal operating blocks are turned off in order to
save power. This mode is active approximately 100μs after a
current pulse provided that the output is in regulation. The
capacitor connected to the REF pin is an essential part of this
feature.
The AS1313 is available in an 8-pin MLPD (2mm x 2mm) and a
6-pin WL-CSP (0.4mm pitch).
Ordering Information and Content Guide appear at end of
datasheet.
Key Benefits & Features
The benefits and features of AS1313, Ultra Low Quiescent
Current, DC-DC Step Down Converter are listed below:
Figure 1:
Added Value of using AS1313
Benefits
Features
Ideal for single Li-Ion battery powered applications
Wide Input Voltage Range (2.4V to 5.5V)
Extended battery life
High Efficiency up to 95%
Less Power Consumption
Low Quiescent Current of typ. 1μA
Low Shutdown Current of less than 100nA
Supports a variety of end applications
Fixed output voltage range (1.2V to 3.6V)
Output Current of 150mA
Over – temperature protection and shutdown
Integrated temperature monitoring
Cost effective, small package
6-pin WL-CSP with 0.4mm pitch
8-pin MLPD (2mm x 2mm)
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 1
General Description
Applications
The AS1313 is an ideal solution for Li-Ion and coin cell powered
devices as:
• Blood glucose meters
• Remote controls
• Hearing aids
• Wireless mouse or any light-load application
Block Diagram
The functional blocks of this device for reference are
shown below:
Figure 2:
AS1313 Block Diagram
VIN 2.4V to 5.5V
VIN
CIN
22µF
AS1313
ON
EN
UVLO
PDRV
OFF
L1 6.8µH
Int
LDO
LX
Logic
VOUT
NDRV
Ipk Det
REF
REF
CREF
100nF
Zero
Cross
Det
OUT
COUT
22µF
Overtemp
Shdn
GND
AS1313 – 2
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Pi n A s s i g n m e n t
The AS1313 pin assignment is described below.
Pin Assignment
Figure 3:
Pin Assignment for MLPD and WL-CSP
Pin A1
indicator
PWR_GND
1
LX
2
8
GND
7
REF
6
OUT
AS1313
MLPD 8-pin 2x2mm
3
PWR_VIN
Exposed pad: GND
4
VIN
5
9
A1
OUT
A2
REF
A3
LX
B1
EN
B2
VIN
B3
GND
EN
Pin Assignment: Shows the TOP view pin assignment of the AS1313.
Figure 4:
Pin Description
Pin Number
Pin
Name
Pin
Type
Description
MLPD
WLP
1
-
PWR_GND
GND
2
A3
LX
DO
3
-
PWR_VIN
S
Power Input Supply. Connect to VIN; only available in MLPD
package
4
B2
VIN
S
Battery Voltage Input. Decouple VIN with a 22μF ceramic
capacitor as close as possible to VIN and GND.
Ground. Connect to GND; only available in MLPD package
Switch Node Connection to Coil. This pin connects to the drains
of the internal main and synchronous power MOSFET switches.
5
B1
EN
DI
Enable Input. Logic controlled shutdown input.
1 = Normal Operation
0 = Shutdown
Note: This pin should not be left floating.
6
A1
OUT
AI
Output Voltage. An internal resistor divider steps the output
voltage down for comparison to the internal reference voltage.
7
A2
REF
AIO
Reference. Connect a 100nF capacitor to this pin
8
B3
GND
GND
Ground
9
-
GND
Exposed Pad. This pad is not connected internally. This pin also
functions as a heat sink. Solder it to a large pad or to the
circuit-board ground plane to maximize power dissipation.
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 3
Absolute Maximum Ratings
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device. These are
stress ratings only. Functional operation of the device at these
or any other conditions beyond those indicated under
“Operating Conditions” is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Figure 5:
Absolute Maximum Ratings
Symbol
Parameter
Min
Max
Units
Comments
Electrical Parameters
Supply Voltage to Ground
5V pins
-0.3
7.0
V
Applicable for pins:
VIN, PWR_VIN, VOUT, EN
Supply Voltage to Ground
5V pins
-0.3
VOUT + 0.3
V
Applicable for pins:
LX, REF
Voltage Difference between
Ground Terminals
-0.3
0.3
V
Applicable for pins:
GND, PWR_GND,
Exposed Pad
Input Current
(latch-up immunity)
-100
100
mA
Norm: JEDEC JESD78
kV
Norm: JEDEC JESD22-A114F
Electrostatic Discharge
VESD-HBM
AS1313 – 4
HBM
±2
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Absolute Maximum Ratings
Symbol
Parameter
Min
Max
Units
Comments
Temperature Ranges and Storage Conditions
θJA (1)
Thermal Resistance
TAMB
Operating Temperature
TJ
Junction
Temperature
WL-CSP
95
°C/W
MLPD
36
°C/W
+85
°C
WL-CSP
+125
°C
MLPD
+150
°C
+125
°C
-40
Storage Temperature Range
-55
Norm IPC/JEDEC J-STD-020 (2)
WL-CSP
TBODY
Package Body
Temperature
+260
°C
85
%
MLPD
Humidity non-condensing
5
Norm IPC/JEDEC J-STD-020 (2)
The lead for Pb-free leaded
packages is matte tin
(100% Sn)
WL-CSP
1
Represents an unlimited floor
life time
MLPD
1
Represents an unlimited floor
life time
Moisture Sensitive
Level
Note(s) and/or Footnote(s):
1. Junction-to-ambient thermal resistance is very dependent on application and board-layout. In situations where high maximum
power dissipation exists, special attention must be paid to thermal dissipation during board design.
2. The reflow peak soldering temperature (body temperature) is specified according IPC/JEDEC J-STD-020 “Moisture/Reflow Sensitivity
Classification for Nonhermetic Solid State Surface Mount Devices”.
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 5
Electrical Characteristics
Electrical Characteristics
All limits are guaranteed. The parameters with min and max
values are guaranteed with production tests or SQC (Statistical
Quality Control) method.
Figure 6:
Electrical Characteristics
Symbol
VIN
VOUT
VOUT_TOL
Parameter
Conditions
Typ
Max
Unit
Input Voltage
VIN, PWR_VIN
2.4
5.5
V
1.2
3.6
V
Regulated Output Voltage
3.6V ≤ VIN ≤ 5.5V
(VIN ≥ VOUT + 0.5V)
2.4V < VIN < 3.6V
1.2
VIN – 0.5V
V
IOUT = 10mA,
TAMB = +25°C
-3
+3
%
IOUT = 10mA
-4
+4
%
2
μA
100
nA
Output Voltage Tolerance
IQ
Quiescent Current
VOUT = 1.03 x VOUTNOM
no load, TAMB = +25°C
ISHDN
Shutdown Current
VEN = 0V
TAMB = +25°C
LNR
Min
Output Voltage Line
Regulation
0.35
1
Vin = 2.4V to 5.5V
IOUT = 100mA
0.2
%/V
Vin = 3.5V to 5.5V
IOUT = 100mA
0.05
%/V
LDR
Output Voltage Load
Regulation
IOUT = 0 to 100mA
0.02
%/mA
IPK
Peak Coil Current
VIN = 3V, TAMB = +25°C
VOUT = 0.9 x VOUTNOM
400
mA
ILOAD
Load Current
VIN ≥ VOUT + 0.5V
RPMOS
P-Channel FET RDS(ON)
ILX = 100mA
0.4
Ω
RNMOS
N-Channel FET RDS(ON)
ILX = -100mA
0.4
Ω
AS1313 – 6
150
mA
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Electrical Characteristics
Symbol
ILX
Parameter
Conditions
LX Leakage
VEN = 0V,
VLX = 0V or 5V
logic threshold
pin EN
VENH
Min
Typ
Max
±0.01
Unit
μA
1.2
V
VENL
0.2
V
IEN
EN Input Bias Current
EN = 3.6V
TAMB = +25°C
100
nA
IREF
REF Input Bias Current
REF = 0.99 x VOUTNOM
TAMB = +25°C
100
nA
TSHDN
Thermal Shutdown
150
°C
ΔTSHDN
Thermal Shutdown Hysteresis
25
°C
Electrical Characteristics: Shows the Electrical Characteristics of the DCDC Converter. VIN = EN = 3.6V, TAMB = –40
to +85°C (unless otherwise specified).
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 7
Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
Typical Operating
Characteristics
Figure 7:
Efficiency vs. Output Current, VOUT = 1.8V
Vin = 2.4V
Vin = 2.6V
Vin = 2.8V
Vin = 3.0V
Vin = 3.3V
0,1
1
10
100
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
0,01
Efficiency (%)
Efficiency (%)
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
0,01
1000
Vin = 4.0V
Vin = 4.5V
Vin = 5.0V
Vin = 5.5V
0,1
Output Current (mA)
1
10
100
1000
Output Current (mA)
Efficiency vs. Output Current: These figures show the Efficiency vs. the Output Current for various Input
Voltages. All measurements were done with VOUT = 1.8V at TAMB = 25°C with the coil LPS4018-682.
Figure 8:
Efficiency vs. Output Current, VOUT = 3.0V
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
0,01
Efficiency (%)
Efficiency vs. Output Current: This
figure shows the Efficiency vs. the
Output Current for various Input
Voltages. All measurements were done
with VOUT = 3.0V at TAMB = 25°C with the
coil LPS4018-682.
Vin = 3.5V
Vin = 4.0V
Vin = 4.5V
Vin = 5.0V
0,1
1
10
100
1000
Output Current (mA)
AS1313 – 8
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
Figure 9:
Maximum Output Current vs. Input Voltage
Maximum Output Current vs. Input
Voltage: This figure shows the IOUT_MAX
vs. the Input Voltage for VOUT = 1.8V and
VOUT = 3.0V at TAMB = 25°C with the coil
LPS4018-682.
0,3
Iout_max (A)
0,25
0,2
0,15
0,1
Ioutmax @ 1.8V
0,05
Ioutmax @ 3.0V
0
2
3
4
5
6
5
6
Input Voltage (V)
Figure 10:
Efficiency vs. Input Voltage, VOUT = 1.8V
100
90
80
Efficiency (%)
Efficiency vs. Input Voltage: This figure
shows the Efficiency vs. the Input
Voltage for various Output Currents. All
measurements were done with a
VOUT = 1.8V at TAMB = 25°C with the coil
LPS4018-682.
70
60
50
40
30
20
10
Iout = 10uA
Iout = 100uA
Iout = 1mA
Iout = 10mA
Iout = 100mA
0
2
3
4
Input Voltage (V)
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 9
Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
Figure 11:
Efficiency vs. Input Voltage, VOUT = 3.0V
100
90
80
Efficiency (%)
Efficiency vs. Input Voltage: This figure
shows the Efficiency vs. the Input
Voltage for various Output Currents. All
measurements were done with a
VOUT = 3.0V at TAMB = 25°C with the coil
LPS4018-682.
70
60
50
40
Iout = 10uA
30
Iout = 100uA
20
Iout = 1mA
Iout = 10mA
10
Iout = 100mA
0
2
3
4
5
6
Input Voltage (V)
Figure 12:
Quiescent Current vs. Input Voltage, VOUT = 1.8V
Quiescent Current vs. Input Voltage:
This figure shows the Quiescent Current
vs. the Input Voltage for VOUT = 1.8V.
The measurement was done at TAMB =
25°C with the coil LPS4018-682.
1,1
1
Quiescent Current (uA)
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
2
2,5
3
3,5
4
4,5
5
5,5
6
Input Voltage(V)
AS1313 – 10
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Detailed Description
The AS1313 is a hysteretic converter and has no continuously
operating fixed oscillator, providing an independent timing
reference. This means the triggering of the on-off switching of
the internal switches depends only on comparators measuring
the output voltage and the coil current measurement. This lead
to a very low quiescent current. In addition, because there is no
fixed timing reference, the operating frequency is determined
by external components (inductor and capacitors) and the
loading on the output.
Detailed Description
Ripple at the output is an essential operating behavior. A power
cycle is initiated when the output regulated voltage drops
below the nominal value of V OUT.
Figure 13:
Simplified Synchronous Step-down DCDC Architecture
L1
ICOIL_on
SW1
IPK
VIN
ICOIL_on
VCOIL_on
ICOIL_off
VIN
CIN
VCOIL_off
COUT
SW2
GND
VOUT
ICOIL_off
RLOAD
VOUT
FB
IZERO
0V
0V
When SW1 is closed and SW2 is open, the current is flowing from
VIN through the coil to R LOAD. With neglecting the resistive
voltage drop over SW1 the voltage across the coil is:
V COIL – on = V IN – V OUT
Based on the expression, which shows the correlation between
voltage across the coil and the coil current, it's easy to rearrange
this equation to get the coil current I COIL generated while SW1
is closed (tON).
(EQ1)
di
u = L ----- I COIL
dt
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
V IN – V OUT
= ------------------------------ ⋅ t ON
L
AS1313 – 11
Detailed Description
When SW1 is open and SW2 is closed, the coil gets discharged,
works like a voltage supply and forces the current through
RLOAD and SW2. With neglecting the resistive voltage drop over
SW2 the voltage across the coil is:
V COIL – off = V OUT
Similar to the expression above, the I COIL generated while SW2
is closed (tOFF) can be expressed as:
(EQ2)
V OUT
I COIL = -------------- ⋅ t OFF
L
The increasing coil current during the charging (SW1 closed)
and the decreasing coil current during the discharging of the
coil (SW2 closed) must be the same. Hence, it’s easy to calculate
the duty cycle of SW1.
(EQ3)
t ON
V IN – V OUT
V OUT
V OUT
I COIL = ------------------------------ ⋅ t ON = -------------- ⋅ t OFF -------------- = --------------------------
L
L
V IN
t ON + t OFF
Based on the EQ1, the on time of SW1 can be given by:
(EQ4)
L
t ON = ------------------------------ ⋅ I COIL
V IN – V OUT
Figure 14:
Simplified Voltage and Current Diagram
V
VIN
VIN
VCOIL
A
A
VOUT_ripple
VOUT_nom
VIDLE
0
VCOIL
B
C
D
B
-VOUT
t
I
IPK
400mA
ICOIL
ILOAD
0
tON
tOFF
SW1 on
SW2 off
SW1 off
SW2 on
tWAIT
tIDLE
SW1 off
SW2 off
tON
tOFF
SW1 on
SW2 off
SW1 off
SW2 on
t
Timing Diagram: This figure shows the relationship between the current and the voltages inside the loop within
the switching cycle.
AS1313 – 12
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Detailed Description
If the V OUT falls below the V OUT_nom, SW1 closes and the coil
current increases until the max. coil current of 400mA is
reached. During this time tON, the V OUT increases. With reaching
the 400mA, the switch SW1 opens immediately, the SW2 closes
and the coil current decreases down till it reaches the zero line.
After this, SW2 opens and if the V OUT is then above the
V OUT_nom, no further pulse is needed, both switches remain in
their open position, hence no coil current is flowing. In this
phase the needed output power only comes out of the COUT.
This time is called t WAIT, which takes ~100us. If the V OUT falls
below V OUT_nom within the time t WAIT, the SW1 closes and the
charging cycle starts again.
If the V OUT is still higher than V OUT_nom after t WAIT is elapsed,
then the AS1313 falls into an idle mode, which results in a
reduction of the quiescent current. Once, the AS1313 is in this
idle mode, the idle-comparator is comparing VOUT with VIDLE
(98% of V OUT_nom) and SW1 closes as soon as the V OUT reaches
this threshold.
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 13
Detailed Description
External Component Selection
Inductors
For best efficiency, choose an inductor with high frequency core
material, such as ferrite, to reduce core losses. The inductor
should have low DCR (DC resistance) to reduce the I²R losses,
and must be able to handle the peak inductor current without
saturating. A 6.8μH inductor with at least 500mA current rating
and DCR of 500mΩ (max) is recommended.
Figure 15:
Recommended Inductors
L
DCR
Current
Rating
Size in mm
(L/W/H)
ELLVEG6R8N
6.8μH
0.35Ω
0.58A
3x3x1
ELLVFG6R8MC
6.8μH
0.23Ω
0.6A
3x3x1.2
ELLVGG6R8N
6.8μH
0.23Ω
1A
3x3x1.5
LQH3NPN6R8MM0
6.8μH
0.24Ω
1A
3x3x1.4
LQH3NPN6R8NM0
6.8μH
0.24Ω
1A
3x3x1.4
LQH3NPN6R8MJ0
6.8μH
0.252Ω
0.85A
3x3x1.1
LQH3NPN6R8NJ0
6.8μH
0.252Ω
0.85A
3x3x1.1
LQH3NPN6R8MMR
6.8μH
0.186Ω
1.25A
3x3x1.1
VLS2012ET-6R8M
6.8μH
0.498
0.57A
2x2x1.2
VLS252015ET-6R8M
6.8μH
0.48
0.85A
2.5x2x1.5
VLS3010ET-6R8M
6.8μH
0.312
0.69A
3x3x1
VLS3012ET-6R8M
6.8μH
0.228
0.81A
3x3x1.2
VLS3015ET-6R8M
6.8μH
0.216
0.92A
3x3x1.5
LPS4018-682ML
6.8μH
0.15
1.2A
4x4x1.7
Part Number
AS1313 – 14
Manufacturer
Panasonic
www.industrial.panasonic.com
Murata
www.murata.com
TDK
www.tdk.com
Coilcraft
www.coilcraft.com
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Detailed Description
Capacitors
The AS1313 requires 3 capacitors. Recommended ceramic X5R
or X7R types will minimize ESL and ESR while maintaining
capacitance at rated voltage over temperature.
The input capacitor supports the triangular current during the
on-time of SW1 and maintains a broadly constant input voltage
during this time. The capacitance value is obtained from
choosing a ripple voltage during the on-time of SW1.
(EQ5)
I COIL
C IN = --------------------- ⋅ t ON
V RIPPLE
Using tON = 1μs, I COIL = 400mA and VRIPPLE = 50mV, EQ5 yields:
CIN = 8μF.
Because ceramic capacitors lose a lot of their initial capacitance
at their maximum rated voltage, it is recommended that either
a higher input capacity or a capacitance with a higher rated
voltage is used. A 22μF cap for C IN is recommended.
Additionally, ripple voltage is generated by the equivalent
series resistance (ESR) of the capacitor.
(EQ6)
V RIPPLE
– ESR
= I COIL ⋅ R ESR
The output capacitor supports the triangular current during the
off-time SW1 (coil discharge period), and also the load current
during the wait time (Region C) and the idle time (Region D).
(EQ7)
I OUT
C OUT = ------------------------------------------- ⋅ ( t WAIT + t IDLE )
0.02 ⋅ V OUT – nom
Using tWAIT = 100μs, tIDLE = 500μs, I OUT = 1mA and
V OUT_nom = 3.3V, EQ7 yields:
COUT = 9μF.
Due to the DC bias of the cap and to sustain also load steps, the
COUT should be between 22μF and 47μF. A larger output
capacitor should be used if lower peak to peak output voltage
ripple is desired. A larger output capacitor will also improve
load regulation on V OUT.
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 15
Detailed Description
Figure 16:
Recommended Input & Output Capacitors
C
TC
Code
Voltage
Rating
Size in mm
(L/W/H)
GRM21BR60J226ME39L
22μF
X5R
6.3V
2x1.25x1.25
GRM31CR61A226ME19L
22μF
X5R
10V
3.2x1.6x1.6
12066D226KAT_A
22μF
X5R
6.3V
3.2x1.6x1.78
1210ZD226KAT_A
22μF
X5R
10V
3.2x1.6x1.78
1210YD226KAT_A
22μF
X5R
16V
3.2x1.6x1.78
C2012X5R0J226K/1.25
22μF
X5R
6.3V
2x1.2x1.25
C2012X5R1A226K/1.25
22μF
X5R
10V
2x1.2x1.25
C2012X5R1C226K
22μF
X5R
16V
2x1.2x1.25
Part Number
Manufacturer
Murata
www.murata.com
AVX
www.avx.com
TDK
www.tdk.com
For C REF a 100nF cap (X5R or better) is recommended.
AS1313 – 16
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Application Information
The AS1313 is an ideal solution for Li-Ion and coin cell powered
devices as blood glucose meters, remote controls, hearing aids,
wireless mouse or any light-load application.
Application Information
Figure 17:
Typical Application Circuit
VIN
VIN
2.4V to 5.5V
LX
L1
6.8µH
VOUT
1.2V to 3.6V
AS1313
ON
PWR_VIN
OUT
EN
REF
OFF
CREF
100nF
GND
CIN
22µF
COUT
22µF
PWR_GND
0V
0V
8-pin MLPD
VIN
VIN
2.4V to 5.5V
ON
LX
L1
6.8µH
VOUT
1.2V to 3.6V
AS1313
EN
OUT
GND
REF
OFF
CIN
22µF
CREF
100nF
COUT
22µF
0V
0V
6-pin WL-CSP
Typical Application: This figure shows the typical application of the DCDC Step Down Converter for 8-pin MLPD
package and 6-pin WL-CSP.
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 17
Pack age Drawings & Mark ings
Package Drawings & Markings
Figure 18:
MLPD-8 2x2 0.5mm Pitch Package Drawing
Symbol
Min
Nom
Max
A
0.51
0.55
0.60
A1
0.00
0.02
0.05
A3
0.15 REF
L
0.225
0.325
0.425
b
0.18
0.25
0.30
D
2.00 BSC
E
2.00BSC
e
0.50 BSC
D2
1.45
1.60
1.70
E2
0.75
0.90
1.00
aaa
-
0.15
-
bbb
-
0.10
-
ccc
-
0.10
-
ddd
-
0.05
-
eee
-
0.08
-
fff
-
0.10
-
N
8
Note(s) and/or Footnote(s):
1. Dimensioning and tolerancing conform to ASME Y14.5M-1994.
2. All dimensions are in millimeters. Angles are in degrees.
3. Coplanarity applies to the exposed heat slug as well as the terminal.
4. Radius on terminal is optional.
5. N is the total number of terminals.
AS1313 – 18
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Pa c k a g e D r a w i n g s & M a r k i n g s
Figure 19:
WLCSP6 0.4mm Pitch Package Drawing
Top through view
Bottom view (ball side)
Note(s) and/or Footnote(s):
1. ccc Coplanarity.
2. All dimensions are in μm.
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 19
Pack age Drawings & Mark ings
Figure 20:
MLPD and WL-CSP Marking
MLPD package
WL-CSP
XXX
zz
XXXX
ZZZZ
AS1313 Marking: Shows the package marking of the MLPD and the WL-CSP product version
Figure 21:
Package Codes
XXXX
Encoded Datecode
for WL-CSP
XXX
Encoded Datecode
for MLPD
ZZ
Marking Code
for MLPD
ZZZZ
Marking Code
for WL-CSP
Package Codes: Shows the package codes of the MLPD and WL-SCP product version
AS1313 – 20
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Ordering & Contac t Information
Ordering & Contact Information
Figure 22:
Ordering Information
Delivery
Form
Package
Ultra Low IQ DCDC Buck
Converter
Tape & Reel
MLPD-8lead
(2mm x 2mm)
3.0V
Ultra Low IQ DCDC Buck
Converter
Tape & Reel
MLPD-8lead
(2mm x 2mm)
BU
3.3V
Ultra Low IQ DCDC Buck
Converter
Tape & Reel
MLPD-8lead
(2mm x 2mm)
AS1313-BTDT-ES
ES
Engineering
sample
Ultra Low IQ DCDC Buck
Converter
Tray
MLPD-8lead
(2mm x 2mm)
AS1313-BWLT-ES
ASU8
Engineering
sample
Ultra Low IQ DCDC Buck
Converter
Tray
6-pin WL-CSP
0.4mm pitch
AS1313-BWLT-12
ASU9
1.2V
Ultra Low IQ DCDC Buck
Converter
Tape & Reel
6-pin WL-CSP
0.4mm pitch
Ordering Code
Marking
Output
AS1313-BTDM-18
BT
1.8V
AS1313-BTDM-30
BV
AS1313-BTDM-33
Description
Ordering Information: Specifies the different available variants of the AS1313.
Buy our products or get free samples online at:
www.ams.com/ICdirect
Technical Support is available at:
www.ams.com/Technical-Support
For further information and requests, e-mail us at:
ams_sales@ams.com
For sales offices, distributors and representatives, please visit:
www.ams.com/contact
Headquarters
ams AG
Tobelbaderstrasse 30
8141 Unterpremstaetten
Austria, Europe
Tel: +43 (0) 3136 500 0
Website: www.ams.com
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 21
RoHS Compliant & ams Green Statement
RoHS Compliant & ams Green
Statement
RoHS: The term RoHS compliant means that ams AG products
fully comply with current RoHS directives. Our semiconductor
products do not contain any chemicals for all 6 substance
categories, including the requirement that lead not exceed
0.1% by weight in homogeneous materials. Where designed to
be soldered at high temperatures, RoHS compliant products are
suitable for use in specified lead-free processes.
ams Green (RoHS compliant and no Sb/Br): ams Green
defines that in addition to RoHS compliance, our products are
free of Bromine (Br) and Antimony (Sb) based flame retardants
(Br or Sb do not exceed 0.1% by weight in homogeneous
material).
Important Information: The information provided in this
statement represents ams AG knowledge and belief as of the
date that it is provided. ams AG bases its knowledge and belief
on information provided by third parties, and makes no
representation or warranty as to the accuracy of such
information. Efforts are underway to better integrate
information from third parties. ams AG has taken and continues
to take reasonable steps to provide representative and accurate
information but may not have conducted destructive testing or
chemical analysis on incoming materials and chemicals. ams AG
and ams AG suppliers consider certain information to be
proprietary, and thus CAS numbers and other limited
information may not be available for release.
AS1313 – 22
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Copyrights & Disclaimer
Copyrights & Disclaimer
Copyright ams AG, Tobelbader Strasse 30, 8141
Unterpremstaetten, Austria-Europe. Trademarks Registered. All
rights reserved. The material herein may not be reproduced,
adapted, merged, translated, stored, or used without the prior
written consent of the copyright owner.
Devices sold by ams AG are covered by the warranty and patent
indemnification provisions appearing in its General Terms of
Trade. ams AG makes no warranty, express, statutory, implied,
or by description regarding the information set forth herein.
ams AG reserves the right to change specifications and prices
at any time and without notice. Therefore, prior to designing
this product into a system, it is necessary to check with ams AG
for current information. This product is intended for use in
commercial applications. Applications requiring extended
temperature range, unusual environmental requirements, or
high reliability applications, such as military, medical
life-support or life-sustaining equipment are specifically not
recommended without additional processing by ams AG for
each application. This product is provided by ams AG “AS IS”
and any express or implied warranties, including, but not
limited to the implied warranties of merchantability and fitness
for a particular purpose are disclaimed.
ams AG shall not be liable to recipient or any third party for any
damages, including but not limited to personal injury, property
damage, loss of profits, loss of use, interruption of business or
indirect, special, incidental or consequential damages, of any
kind, in connection with or arising out of the furnishing,
performance or use of the technical data herein. No obligation
or liability to recipient or any third party shall arise or flow out
of ams AG rendering of technical or other services.
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 23
Document Status
Document Status
Document Status
Product Preview
Preliminary Datasheet
Datasheet
Datasheet (discontinued)
AS1313 – 24
Product Status
Definition
Pre-Development
Information in this datasheet is based on product ideas in
the planning phase of development. All specifications are
design goals without any warranty and are subject to
change without notice
Pre-Production
Information in this datasheet is based on products in the
design, validation or qualification phase of development.
The performance and parameters shown in this document
are preliminary without any warranty and are subject to
change without notice
Production
Information in this datasheet is based on products in
ramp-up to full production or full production which
conform to specifications in accordance with the terms of
ams AG standard warranty as given in the General Terms of
Trade
Discontinued
Information in this datasheet is based on products which
conform to specifications in accordance with the terms of
ams AG standard warranty as given in the General Terms of
Trade, but these products have been superseded and
should not be used for new designs
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
Revision Information
Revision Information
Changes from 1-41 (2013-Oct) to current revision 1-42 (2014-Jun-12)
Page(1)
Content was updated to the latest ams design
Updated Figure 22
21
Note(s) and/or Footnote(s):
1. Page numbers for the previous version may differ from page numbers in the current revision.
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
AS1313 – 25
Content Guide
Content Guide
AS1313 – 26
1
1
2
2
General Description
Key Benefits & Features
Applications
Block Diagram
3
4
6
8
Pin Assignment
Absolute Maximum Ratings
Electrical Characteristics
Typical Operating Characteristics
11
14
14
15
Detailed Description
External Component Selection
Inductors
Capacitors
17
18
21
22
23
24
25
Application Information
Package Drawings & Markings
Ordering & Contact Information
RoHS Compliant & ams Green Statement
Copyrights & Disclaimer
Document Status
Revision Information
ams Datasheet, Confidential: 2014-Jun-12 [v1-42]
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