DATASHEET
ISL9000A
FN6391
Rev 3.00
October 15, 2015
Dual LDO with Low Noise, Very High PSRR and Low IQ
ISL9000A is a high performance dual LDO capable of sourcing
300mA current from each output. It has a low standby current
and very high PSRR and is stable with output capacitance of
1µF to 10µF with ESR of up to 200m.
Features
The device integrates an individual Power-On-Reset (POR)
function for each output. The POR delay for VO2 can be
externally programmed by connecting a timing capacitor to the
CPOR pin. The POR delay for VO1 is internally fixed at
approximately 2ms. A reference bypass pin is also provided for
connecting a noise filtering capacitor for low noise and highPSRR applications.
• ±1.8% accuracy over all operating conditions
The quiescent current is typically only 42µA with both LDO’s
enabled and active. Separate enable pins control each
individual LDO output. When both enable pins are low, the
device is in shutdown, typically drawing less than 0.1µA.
• Wide input voltage capability: 2.3V to 6.5V
Several combinations of voltage outputs are standard. Output
voltage options for each LDO range from 1.5V to 3.3V. Other
output voltage options may be available upon request.
• Separate enable and POR pins for each LDO
• Integrates two 300mA high performance LDOs
• Excellent transient response to large current steps
• Excellent load regulation: < 0.1% voltage change across full
range of load current
• Low output noise: typically 30µVRMS @ 100µA (1.5V)
• Very high PSRR: 90dB @ 1kHz
• Extremely low quiescent current: 42µA (both LDOs active)
• Low dropout voltage: typically 200mV @ 300mA
• Stable with 1µF to 10µF ceramic capacitors
• Soft-start and staged turn-on to limit input current surge
during enable
• Current limit and overheat protection
• Tiny 10 Ld 3mmx3mm DFN package
• -40°C to +85°C operating temperature range
• Pb-free (RoHS compliant)
Applications
• PDAs, Cell Phones and Smart Phones
• Portable Instruments, MP3 Players
• Handheld Devices including Medical Handheld
ISL9000A
VIN (2.3 TO 6.5V)
1
ON
2
ENABLE1
OFF ON
ENABLE2
OFF
3
4
5
C1
C2
VIN
EN1
VO1
VO2
EN2
POR2
CBYP
POR1
CPOR
GND
10
VO1
9
VO2 OK
8
7
VO2 TOO LOW
6
VOUT1 OK
C3
C4
C5
VO1 TOO LOW
VO2
RESET2
(200ms DELAY,
C3 = 0.01µF)
RESET1
(2ms DELAY)
C1, C4, C5: 1µF X5R CERAMIC CAPACITOR
C2: 0.1µF X7R CERAMIC CAPACITOR
C3: 0.01µF X7R CERAMIC CAPACITOR
FIGURE 1. TYPICAL APPLICATION
FN6391 Rev 3.00
October 15, 2015
Page 1 of 14
ISL9000A
Block Diagram
VIN
VO1
VO2
LDO
VO1
ERROR
AMPLIFIER
~1.0V
VO2
VREF
TRIM
IS1
POR
COMPARATOR
QEN1
VOK1
1V
POR1
LDO-1
POR2
QEN2
VO1
100k
QEN1
IS2
LDO-2
IS1
VOK2
EN1
CONTROL
LOGIC
EN2
POR2
VOK2
POR2
DELAY
CBYP
VO2
BANDGAP AND
TEMPERATURE
SENSOR
VOLTAGE
REFERENCE
GENERATOR
100k
UVLO
1.00V
VOK1
0.94V
POR1
0.90V
CPOR
FN6391 Rev 3.00
October 15, 2015
POR1
DELAY
GND
Page 2 of 14
ISL9000A
Pin Configuration
ISL9000A
(10 LD 3X3 DFN)
TOP VIEW
VIN 1
10 VO1
EN1 2
9
VO2
EN2 3
8
POR2
CBYP 4
7
POR1
CPOR 5
6
GND
Pin Descriptions
PIN
NUMBER
PIN
NAME
TYPE
1
VIN
Analog I/O
2
EN1
Low Voltage Compatible
CMOS Input
LDO-1 Enable.
3
EN2
Low Voltage Compatible
CMOS Input
LDO-2 Enable.
4
CBYP
Analog I/O
Reference Bypass Capacitor Pin:
Optionally connect capacitor of value 0.01µF to 1µF between this pin and GND to tune in the
desired noise and PSRR performance.
5
CPOR
Analog I/O
POR2 Delay Setting Capacitor Pin:
Connect a capacitor between this pin and GND to delay the POR2 output release after LDO-2
output reaches 94% of its specified voltage level. (200ms delay per 0.01µF).
6
GND
Ground
7
POR1
Open Drain Output (1mA)
Open-drain POR Output for LDO-1 (active-low):
Internally connected to VO1 through 100k resistor.
8
POR2
Open Drain Output (1mA)
Open-drain POR Output for LDO-2 (active-low):
Internally connected to VO2 through 100k resistor.
9
VO2
Analog I/O
LDO-2 Output:
Connect capacitor of value 1µF to 10µF to GND (1µF recommended).
10
VO1
Analog I/O
LDO-1 Output:
Connect capacitor of value 1µF to 10µF to GND (1µF recommended).
FN6391 Rev 3.00
October 15, 2015
DESCRIPTION
Supply Voltage/LDO Input:
Connect a 1µF, X5R ceramic capacitor to GND.
GND is the connection to system ground. Connect to PCB Ground plane.
Page 3 of 14
ISL9000A
Ordering Information
PART NUMBER
(Notes 1, 3)
PART
MARKING
VO1 VOLTAGE
(V) (Note 2)
VO2 VOLTAGE
(V) (Note 2)
TEMP RANGE
(°C)
PACKAGE
(Pb-Free)
PKG
DWG. #
ISL9000AIRNNZ
DEYA
3.3
3.3
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRNJZ
DEWA
3.3
2.8
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRNFZ
DEVA
3.3
2.5
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRNCZ (No longer available,
recommended replacement: ISL9000AIRNJZ)
DETA
3.3
1.8
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRMNZ
DESA
3.0
3.3
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRMMZ (No longer available,
recommended replacement: ISL9000AIRMGZ-T)
DERA
3.0
3.0
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRMGZ
DEPA
3.0
2.7
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRLLZ
DENA
2.9
2.9
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRKNZ (No longer available,
recommended replacement: ISL9000AIRKCZ-T)
DELA
2.85
3.3
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRKKZ
DEKA
2.85
2.85
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRKJZ
DEJA
2.85
2.8
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRKFZ
DEHA
2.85
2.5
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRKPZ (No longer available,
recommended replacement: ISL9000AIRKCZ-T)
DEMA
2.85
1.85
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRKCZ
DEGA
2.85
1.8
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRJNZ
DEEA
2.8
3.3
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRJMZ (No longer available,
recommended replacement: ISL9000AIRJBZ-T)
DEDA
2.8
3.0
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRJRZ (No longer available,
recommended replacement: ISL9000AIRJNZ-T)
DEFA
2.8
2.6
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRJCZ (No longer available,
recommended replacement: ISL9000AIRJBZ-T)
DECA
2.8
1.8
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRJBZ
DEBA
2.8
1.5
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRFJZ
DDVA
2.5
2.8
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRFDZ
DDTA
2.5
2.0
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRFCZ
DDSA
2.5
1.8
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRCJZ
DDRA
1.8
2.8
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
ISL9000AIRCCZ
DDPA
1.8
1.8
-40 to +85
10 Ld 3x3 DFN
L10.3x3C
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. For other output voltages, contact Intersil Marketing.
3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
FN6391 Rev 3.00
October 15, 2015
Page 4 of 14
ISL9000A
Evaluation Board Ordering Information
PART
NUMBER
VO1 VOLTAGE
(V)
VO2 VOLTAGE
(V)
ISL9000AIRNJZ-EVZ
3.3
2.8
ISL9000AIRNFZ-EVZ
3.3
2.5
ISL9000AIRMNZ-EVZ
3.0
3.3
ISL9000AIRMGZ-EVZ
3.0
2.7
ISL9000AIRKKZ-EVZ
2.85
2.85
ISL9000AIRKJZ-EVZ
2.85
2.8
ISL9000AIRKFZ-EVZ
2.85
2.5
ISL9000AIRKCZ-EVZ
2.85
1.8
ISL9000AIRJNZ-EVZ
2.8
3.3
ISL9000AIRJBZ-EVZ
2.8
1.5
ISL9000AIRFJZ-EVZ
2.5
2.8
ISL9000AIRFDZ-EVZ
2.5
2.0
ISL9000AIRFCZ-EVZ
2.5
1.8
ISL9000AIRCCZ-EVZ
1.8
1.8
FN6391 Rev 3.00
October 15, 2015
Page 5 of 14
ISL9000A
Absolute Maximum Ratings
Thermal Information
Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+7.1V
VO1, VO2 Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3.6V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to (VIN + 0.3)V
Thermal Resistance (Notes 4, 5)
JA (°C/W) JC (°C/W)
10 Ld 3x3 DFN Package . . . . . . . . . . . . . . .
52.8
11
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3V to 6.5V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
5. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
Unless otherwise noted, all parameters are guaranteed over the operational supply voltage and temperature
range of the device as follows: TA = -40°C to +85°C; VIN = (VO + 0.5V) to 6.5V with a minimum VIN of 2.3V; CIN = 1µF; CO = 1µF; CBYP = 0.01µF;
CPOR = 0.01µF. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
(Note 8)
TYP
MAX
(Note 8)
UNITS
6.5
V
DC CHARACTERISTICS
Supply Voltage
VIN
2.3
Quiescent condition: IO1 = 0µA; IO2 = 0µA
Ground Current
IDD1
One LDO active
25
32
µA
IDD2
Both LDO active
42
52
µA
Shutdown Current
IDDS
@ +25°C
0.1
1.0
µA
UVLO Threshold
VUV+
1.9
2.1
2.3
V
VUV-
1.6
1.8
2.0
V
Regulation Voltage Accuracy
Maximum Output Current
IMAX
Internal Current Limit
ILIM
Dropout Voltage (Note 7)
VDO1
Thermal Shutdown
Temperature
Initial accuracy at VIN = VO + 0.5V, IO = 10mA, TJ = +25°C
-0.7
+0.7
%
VIN = VO + 0.5V to 5.5V, IO = 10µA to 300mA, TJ = +25°C
-0.8
+0.8
%
VIN = VO + 0.5V to 5.5V, IO = 10µA to 300mA, TJ = -40°C to +125°C
-1.8
+1.8
%
Continuous
300
350
mA
475
600
mA
IO = 300mA; VO 2.5V
300
500
mV
VDO2
IO = 300mA; 2.5V VO 2.8V
250
400
mV
VDO3
IO = 300mA; VO > 2.8V
200
325
mV
TSD+
145
°C
TSD-
110
°C
@ 1kHz
90
dB
@ 10kHz
70
dB
@ 100kHz
50
dB
IO = 100µA, VO = 1.5V, TA = +25°C, CBYP = 0.1µF
BW = 10Hz to 100kHz
30
µVRMS
AC CHARACTERISTICS
Ripple Rejection (Note 6)
Output Noise Voltage (Note 6)
FN6391 Rev 3.00
October 15, 2015
IO = 10mA, VIN = 2.8V(min), VO = 1.8V, CBYP = 0.1µF
Page 6 of 14
ISL9000A
Electrical Specifications
Unless otherwise noted, all parameters are guaranteed over the operational supply voltage and temperature
range of the device as follows: TA = -40°C to +85°C; VIN = (VO + 0.5V) to 6.5V with a minimum VIN of 2.3V; CIN = 1µF; CO = 1µF; CBYP = 0.01µF;
CPOR = 0.01µF. Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued)
PARAMETER
SYMBOL
MIN
(Note 8)
TEST CONDITIONS
TYP
MAX
(Note 8)
UNITS
250
500
µs
30
60
µs/V
DEVICE START-UP CHARACTERISTICS
Device Enable Time
tEN
Time from assertion of the ENx pin to when the output voltage
reaches 95% of the VOx(NOM)
LDO Soft-Start Ramp Rate
tSSR
Slope of linear portion of LDO output voltage ramp during start-up
EN1, EN2 PIN CHARACTERISTICS
Input Low Voltage
VIL
-0.3
0.5
V
Input High Voltage
VIH
1.4
VIN +
0.3
V
0.1
µA
Input Leakage Current
IIL, IIH
Pin Capacitance
CPIN
Informative
5
pF
POR1, POR2 PIN CHARACTERISTICS
POR1, POR2 Thresholds
POR1 Delay
VPOR+
As a percentage of nominal output voltage
91
94
97
%
VPOR-
87
90
93
%
tP1LH
1.0
2.0
3.0
ms
25
tP1HL
POR2 Delay
tP2LH
CPOR = 0.01µF
100
POR1, POR2 Pin Internal
Pull-Up Resistance
VOL
200
300
25
tP2HL
POR1, POR2 Pin Output Low
Voltage
µs
µs
@ IOL = 1.0mA
RPOR
78
ms
100
0.2
V
180
k
NOTES:
6. Limits established by characterization and are not production tested.
7. VOx = 0.98*VOx(NOM); Valid for VOx greater than 1.85V.
8. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
EN1
EN2
tEN
VPOR+
VPOR-
VPOR+
VPOR-
