APL5317
Selectable Adjustable/Fixed Low Dropout 300mA Linear Regulator
General Description
Features
•
•
Wide Operating Voltage: 2.8~6V
The APL5317 is a low dropout linear regulator which
Low Dropout Voltage:
only needs a single input voltage supply from 2.8~6V,
and it can deliver current up to 300mA to a set output
230mV(typical) @ 300mA
•
•
voltage. It can work with low ESR ceramic capacitors,
that make it ideal for using in the battery-powered
Guaranteed 300mA Output Current
applications, such as notebook computers and cellular
phones. Its typical dropout voltage is only 230mV at
Two Modes for Setting Output Voltage
- Fixed Output Voltage: 1~5V
- Adjustable Output Voltage: 0.8~5.5V
•
•
•
•
•
•
300mA loading. The APL5317 provides two output voltage operation modes, the fixed output voltage mode and
Current-Limit Protection with Foldback Current
the adjustable output voltage, controlled by the SET pin
for setting the output voltage. The fixed output voltage
Internal Soft-Start
Over Temperature Protection
Stable with Low ESR Ceriamic Capacitor
mode sets the output to a preset voltage (only 1.2V available now) in the chip by connecting SET pin to ground,
SOT-23-5 Package
and the adjustable output voltage mode needs two
Lead Free and Green Devices Available
resistors as a voltage divider connected to SET pin to
(RoHS Compliant)
define the output. The current-limit with current foldback
Pin Configuration
and thermal shutdown functions protect the device
against current over-loads and over temperature. The
APL5317 is available in a SOT-23-5 package.
VIN 1
5 VOUT
Applications
GND 2
SHDN 3
4 SET
•
•
•
SOT-23-5
Cellular Phones
Portable and Battery-Powered Equipment
Notebook and Personal Computers
Simplified Application Circuit
1. Fixed Output Voltage Mode
2. Adjustable Output Voltage Mode
APL5317
APL5317
VIN
1
CIN
VIN
VOUT
3 SHDN
SET
5
VIN
VOUT
1
4
CIN
COUT
VIN
VOUT
3 SHDN
SET
GND
GND
2
2
5
VOUT
4
COUT
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright ANPEC Electronics Corp.
Rev. A.3 - Apr., 2008
1
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APL5317
Ordering and Marking Information
APL5317
Assembly Material
Handling Code
Temperature Range
Package Code
Voltage Code
APL5317 -12 B:
Package Code
B : SOT-23-5
Operating Junction Temperature Range
I : -40 to 85° C
Handling Code
TR : Tape & Reel
Voltage Code (Note 1)
12 : 1.2V
Assembly Material (Note 2)
L : Lead Free Device
G: Halogen and Lead Free Device
375X
X - Date code
Note 1: For other voltage versions, please contact ANPEC for details.
Note 2: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020C for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Absolute Maximum Ratings
Symbol
Parameter
VIN
VIN Supply Voltage (VIN to GND)
VSHDN
SHDN Input Voltage (SHDN to GND)
PD
Power Dissipation
TJ
Junction Temperature
TSTG
Storage Temperature
TSDR
Maximum Lead Soldering Temperature, 10 Seconds
Rating
Unit
-0.3 ~ 6.5
V
-0.3 ~ 6.5
V
Internally Limited
W
-40 ~ 150
o
-65 ~ 150
o
260
o
C
C
C
Thermal Characteristics
Symbol
Parameter
θJA
Thermal Resistance-Junction to Ambient
θJC
Thermal Resistance-Junction to Case
Typical Value
(Note 3)
Unit
240
o
130
o
C/W
C/W
Note 3 : θJA is measured with the component mounted on a high effective thermal conductivity test board in free air.
Recommended Operating Conditions
Symbol
Parameter
Range
Unit
VIN
VIN Supply Voltage
2.8 ~ 6
V
VOUT
Output Voltage
0.8 ~ 5.5
V
IOUT
VOUT Output Current
CIN
Input Capacitor
0 ~ 300
mA
0.22 ~ 100
µF
COUT
Output Capacitor
1.5 ~ 33
µF
TJ
Junction Temperature
-40 ~ 125
o
Copyright ANPEC Electronics Corp.
Rev. A.3 - Apr., 2008
2
C
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APL5317
Electrical Characteristics
Unless otherwise specified, these specifications apply over VIN = VOUT+1V (min VIN=2.8V), IOUT=0~300mA, CIN = 1µF, COUT = 2.2µF,
TA = -40 to 85oC. Typical values are at TA = 25oC.
Symbol
Parameter
APL5317
Test Conditions
Unit
Min.
Typ.
Max.
VIN
Input Voltage
2.8
-
6
V
VOUT
Output Voltage Range
0.8
-
5.5
V
IQ
Quiescent Current
IOUT =10mA ~300mA
-
135
160
µA
VREF
Reference Voltage
Measured on SET, VIN=VOUT+1V(min VIN=2.8V),
IOUT=10mA
-
0.8
-
V
Output Voltage Accuracy
TA=25°
C, VIN=VOUT+1V(min VIN=2.8V),
IOUT=10mA
-1
-
+1
%
-2
-
+2
%
VOUT = 2.5V, IOUT = 300mA
-
230
360
VOUT = 3.3V, IOUT = 300mA
-
170
300
Power Supply Ripple Rejection
f = 10kHz, IOUT = 300mA
Ratio
-
45
-
dB
Noise
-
160
-
µVRMS
450
600
-
mA
-
80
-
mA
SHDN Input Voltage High
1.6
-
-
SHDN Input Voltage Low
-
-
0.4
-
0.1
1
µA
-
3
-
MΩ
-
60
-
Ω
Over Temperature Threshold
-
160
-
°
C
Over Temperature Hysteresis
-
40
-
°
C
SET Input Threshold for
Fixed/Adjustable Output Voltage
Mode
-
100
-
mV
-100
-
100
nA
-
60
-
µs
TA=-40°
C ~ 85°
C, VIN=VOUT+1V(min VIN=2.8V),
Output Voltage Accuracy
IOUT=0~300mA
VDROP Dropout Voltage
PSRR
ILIMIT
mV
f = 80Hz to 100kHz, IOUT = 300mA
Current-Limit
ISHORT Foldback Current
VOUT = 0V
V
Shutdown VIN Supply Current
SHDN = Low, VIN = 6V
SHDN Pull Low Resistance
VOUT Discharge MOSFET
RDS(ON)
SET Input Bias Current
TSS
SHDN = Low
VSET=0.8V
Soft-Start Interval
Copyright ANPEC Electronics Corp.
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APL5317
Typical Operating Characteristics
Quiescent Current vs. Supply Voltage
Quiescent Current vs. Junction Temperature
160
138
IOUT= 0mV
136
Quiescent Current, IQ (µA)
Quiescent Current, IQ (µA)
140
120
100
80
60
40
134
132
130
128
20
126
0
0
1
2
3
4
5
6
-50
7
-25
Supply Voltage, VIN (V)
Quiescent Current vs. Output Current
50
75
100
125
PSRR vs. Frequency
0
-10
140
-20
PSRR (dB)
160
VIN=5.5V
120
100
VIN=3.3V, VOUT=1.2V
CIN=1µF, COUT=2.2µF
IOUT=300mA
-30
-40
VIN=4.5V
-50
80
-60
60
0
50
100
150
200
250
1000
300
10000
100000
1000000
Frequency (Hz)
Output Current, I OUT (mA)
Dropout Voltage vs. Output Current
Dropout Voltage vs. Output Current
300
250
250
TJ=25°
C
TJ=75°
C
TJ=125°
C
200
150
100
TJ=25°
C
VOUT=3.3V
Dropout Voltage, VDROP (mV)
VOUT=2.5V
Dropout Voltage, VDROP (mV)
25
Junction Temperature, T J (°
C)
180
Quiescent Current, IQ (µA)
0
TJ=0°
C
TJ=-50°
C
50
TJ=75°
C
200
TJ=125°
C
150
100
TJ=0°
C
50
TJ=-50°
C
0
0
0
100
200
Output Current, I OUT (mA)
Copyright ANPEC Electronics Corp.
Rev. A.3 - Apr., 2008
0
300
4
100
200
Output Current, IOUT (mA)
300
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APL5317
Typical Operating Characteristics (Cont.)
Loop Gain vs. Frequency
Phase vs. Frequency
160
50
VIN=3.3V, VOUT=1.2V, CIN=1µF, COUT=2.2µF
40
30
140
IOUT=100mA
IOUT=300mA
Phase (degree)
120
20
Loop Gain (dB)
VIN=3.3V, VOUT=1.2V, CIN=1µF, C OUT=2.2µF
10
0
100
80
60
-10
40
IOUT=300mA
-20
IOUT=100mA
20
-30
0
-40
1000
10000
100000
1000
1000000
Frequency (Hz)
10000
100000
1000000
Frequency (Hz)
Current Limit vs. Junction Temperature
650
Current Limit, ILIMIT (mA)
VIN=5V
600
550
500
450
-50
-25
0
25
50
75
Junction Temperature, TJ (°
C)
Copyright ANPEC Electronics Corp.
Rev. A.3 - Apr., 2008
100
125
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APL5317
Operating Waveforms
Load Transient
Line Transient
VIN=3.3V, CIN=1µF, COUT=2.2µF, TR=1µs
CIN=1µF, COUT=2.2µF, TR=10µs, IOUT=10mA
V OUT
V IN
V OUT
IOUT
CH1 : VOUT, 50mV/div, AC
CH2 : IOUT, 100mA/div, DC
Time : 100µs/div
CH1 : VIN, 1V/div, DC
CH2 : VOUT, 20mV/div, AC
Time : 100µs/div
Enable
Shutdown
V OUT
V OUT
V SHDN
V SHDN
I OUT
I OUT
CH1 : VOUT, 500mV/div
CH2 : VSHDN, 5V/div
CH3 : IOUT, 200mA/div
Time : 50µs/div
Copyright ANPEC Electronics Corp.
Rev. A.3 - Apr., 2008
CH1 : VOUT, 500mV/Div
CH2 : V
, 5V/Div
SHDN
CH3 : IOUT, 200mA/Div DC
Time : 10µs/Div
6
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APL5317
Operating Waveforms (Cont.)
Power on
Power off
V IN
V IN
V OUT
V OUT
I OUT
I OUT
CH1 : VIN, 2V/div
CH2 : VOUT, 500mV/div
CH3 : IOUT, 100mA/div
Time : 200µs/Div
CH1 : VIN, 2V/div
CH2 : VOUT,, 500mV/div,
CH3 : IOUT, 100mA/div
Time : 50ms/Div
Pin Description
PIN
No
NAME
1
2
3
VIN
GND
SHDN
4
SET
5
VOUT
FUNCTION
Voltage supply input pin
Ground pin
Shutdown control pin, logic high: enable; logic low: shutdown
Connect this pin to ground for fixed output voltage operation. Connect this pin to an external
resistor divider for adjustable output voltage mode operation.
Regulator output pin
Copyright ANPEC Electronics Corp.
Rev. A.3 - Apr., 2008
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APL5317
Block Diagram
SHDN
VIN
Shutdown
Logic
Foldback
current
limit
Thermal
Shutdown
+
VOUT
Low
3MΩ
SET
High
+
0.8V
GND
100mV
Typical Application Circuits
1. Fixed Output Voltage Mode
APL5317
VIN
1
CIN
1µF
3
VIN
VOUT
SHDN
SET
5
VOUT
4
GND
COUT
2.2µF
2
Enable
Shutdown
2.2µF/GRM155R60J225M Murata
Copyright ANPEC Electronics Corp.
Rev. A.3 - Apr., 2008
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APL5317
Typical Application Circuits (Cont.)
2. Adjustable Output Voltage Mode
APL5317
VIN
1
CIN
1µF
3
VOUT
VIN
SET
SHDN
VOUT
5
4
R1
GND
COUT
2.2µF
2
Enable
R2
Shutdown
R1
VOUT = 0.8 ⋅ 1 +
R2
Function Description
Internal Soft-Start
ture of APL5317. When the junction temperature exceeds
+160οC, a thermal sensor turns off the output PMOS,
An internal soft-start function controls rising rate of the
output voltage to limit the surge current at start-up. The
allowing the device to cool down. The regulator regulates the output again through initiation of a new soft-
typical soft-start interval is about 80µs.
start cycle after the junction temperature is cooled by 40οC.
The thermal shutdown is designed with a 40οC hyster-
Output Voltage Regulation
The APL5317 can work in either fixed or adjustable mode
esis to lower the average junction temperature during
continuous thermal overload conditions, extending life-
by connecting the SET to GND or a resistor-divider which
receives the feedback voltage of the regulator. The output
time of the device.
For normal operation, device power dissipation should
voltage set by the resistor-divider is determined by:
R1
VOUT = 0.8 ⋅ 1 +
R2
be externally limited, so that junction temperature will not
exceed 125οC.
Where R1 is connected from VOUT to SET with Kelvin
sensing and R2 is connected from SET to GND. The
Under-Voltage Lock Out (UVLO)
The APL5317 monitors the input voltage to prevent wrong
recommended value of R2 is in the range of 100~100kΩ.
An error amplifier works with a temperature compen-
logic control. The UVLO function initiates a soft-start process after input voltage exceeds its rising UVLO thresh-
sated 0.8V reference and an output PMOS regulates the
output to the presetting voltage. The error amplifier is
old during power on. The UVLO function also shuts off
the output when the input voltage falls below its falling
designed with high bandwidth and DC gain provides
very fast transient response and less load regulation.
threshold. Typical UVLO hysteresis voltage is 0.8V.
It compares the reference with the feedback voltage and
amplifies the difference to drive the output PMOS which
Shutdown Control
The APL5317 has an active-low shutdown function. Force
SHDN high (>1.6V) enables the VOUT; force SHDN low
provides load current from VIN to VOUT.
( 2KV, VMM > 200V
10ms, 1tr > 100mA
Classification Reflow Profiles
Profile Feature
Average ramp-up rate
(TL to TP)
Preheat
- Temperature Min (Tsmin)
- Temperature Max (Tsmax)
- Time (min to max) (ts)
Time maintained above:
- Temperature (TL)
- Time (tL)
Peak/Classification Temperature (Tp)
Time within 5°C of actual
Peak Temperature (tp)
Ramp-down Rate
Time 25°C to Peak Temperature
Sn-Pb Eutectic Assembly
Pb-Free Assembly
3°C/second max.
3°C/second max.
100°C
150°C
60-120 seconds
150°C
200°C
60-180 seconds
183°C
60-150 seconds
217°C
60-150 seconds
See table 1
See table 2
10-30 seconds
20-40 seconds
6°C/second max.
6°C/second max.
6 minutes max.
8 minutes max.
Notes: All temperatures refer to topside of the package. Measured on the body surface.
Copyright ANPEC Electronics Corp.
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APL5317
Classification Reflow Profiles (Cont.)
Table 1. SnPb Eutectic Process – Package Peak Reflow Temperatures
3
3
Package Thickness
Volume mm
