Dual LDO with Low Noise, Very High PSRR and Low I
Q
ISL9000A
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 200mΩ.
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 high-
PSRR applications.
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.
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.
Features
• Integrates two 300mA high performance LDOs
• Excellent transient response to large current steps
• ±1.8% accuracy over all operating conditions
• Excellent load regulation: < 0.1% voltage change across full
range of load current
• Low output noise: typically 30µV
RMS
@ 100µA (1.5V)
• Very high PSRR: 90dB @ 1kHz
• Extremely low quiescent current: 42µA (both LDOs active)
• Wide input voltage capability: 2.3V to 6.5V
• Low dropout voltage: typically 200mV @ 300mA
• Stable with 1µF to 10µF ceramic capacitors
• Separate enable and POR pins for each LDO
• 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)
ON
ENABLE1
OFF ON
ENABLE2
OFF
1
2
3
4
5
C1
C2
C3
10
VIN
EN1
EN2
CBYP
CPOR
VO1
9
VO2
8
POR2
7
POR1
6
GND
C4
C5
VO1 TOO LOW
V
OUT1
OK
VO2 TOO LOW
VO2 OK
VO2
RESET2
(200ms DELAY,
C3 = 0.01µF)
RESET1
(2ms DELAY)
VO1
C1, C4, C5: 1µF X5R CERAMIC CAPACITOR
C2: 0.1µF X7R CERAMIC CAPACITOR
C3: 0.01µF X7R CERAMIC CAPACITOR
FIGURE 1. TYPICAL APPLICATION
March 26, 2014
FN6391.2
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|
Copyright Intersil Americas LLC 2007, 2008, 2014. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
ISL9000A
Block Diagram
VIN
VO1
VO2
LDO
ERROR
AMPLIFIER
VO1
~1.0V
VREF
TRIM
POR
COMPARATOR
1V
VOK1
POR1
LDO-2
QEN1
QEN2
VOK2
POR2
VO2
IS1
LDO-1
QEN1
IS1
IS2
VO1
100k
EN1
EN2
CBYP
UVLO
CONTROL
LOGIC
POR2
VOK2
POR2
DELAY
100k
BANDGAP AND
TEMPERATURE
SENSOR
VO2
VOLTAGE
REFERENCE
GENERATOR
1.00V
0.94V
0.90V
VOK1
POR1
DELAY
POR1
CPOR
GND
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ISL9000A
Pin Configuration
ISL9000A
(10 LD 3X3 DFN)
TOP VIEW
VIN 1
EN1 2
EN2 3
CBYP 4
CPOR 5
10 VO1
9
8
7
6
VO2
POR2
POR1
GND
Pin Descriptions
PIN
NUMBER
1
2
3
4
PIN
NAME
VIN
EN1
EN2
CBYP
TYPE
Analog I/O
Low Voltage Compatible
CMOS Input
Low Voltage Compatible
CMOS Input
Analog I/O
DESCRIPTION
Supply Voltage/LDO Input:
Connect a 1µF, X5R ceramic capacitor to GND.
LDO-1 Enable.
LDO-2 Enable.
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.
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).
GND is the connection to system ground. Connect to PCB Ground plane.
Open-drain POR Output for LDO-1 (active-low):
Internally connected to VO1 through 100kΩ resistor.
Open-drain POR Output for LDO-2 (active-low):
Internally connected to VO2 through 100kΩ resistor.
LDO-2 Output:
Connect capacitor of value 1µF to 10µF to GND (1µF recommended).
LDO-1 Output:
Connect capacitor of value 1µF to 10µF to GND (1µF recommended).
5
CPOR
Analog I/O
6
7
8
9
10
GND
POR1
POR2
VO2
VO1
Ground
Open Drain Output (1mA)
Open Drain Output (1mA)
Analog I/O
Analog I/O
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ISL9000A
Ordering Information
PART NUMBER
(Notes 1, 3)
ISL9000AIRNNZ
ISL9000AIRNJZ
ISL9000AIRNFZ
ISL9000AIRNCZ
ISL9000AIRMNZ
ISL9000AIRMMZ
ISL9000AIRMGZ
ISL9000AIRLLZ
ISL9000AIRKNZ
ISL9000AIRKKZ
ISL9000AIRKJZ
ISL9000AIRKFZ
ISL9000AIRKPZ
ISL9000AIRKCZ
ISL9000AIRJNZ
ISL9000AIRJMZ
ISL9000AIRJRZ
ISL9000AIRJCZ
ISL9000AIRJBZ
ISL9000AIRGPZ
ISL9000AIRGCZ
ISL9000AIRFJZ
ISL9000AIRFDZ
ISL9000AIRFCZ
ISL9000AIRPLZ
ISL9000AIRPPZ
ISL9000AIRCJZ
ISL9000AIRCCZ
ISL9000AIRBLZ
ISL9000AIRBJZ
ISL9000AIRBCZ
ISL9000AIRBBZ
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.
PART
MARKING
DEYA
DEWA
DEVA
DETA
DESA
DERA
DEPA
DENA
DELA
DEKA
DEJA
DEHA
DEMA
DEGA
DEEA
DEDA
DEFA
DECA
DEBA
DDYA
DDWA
DDVA
DDTA
DDSA
DFBA
DFCA
DDRA
DDPA
DDNA
DDMA
DDLA
DDKA
VO1 VOLTAGE
(V) (Note 2)
3.3
3.3
3.3
3.3
3.0
3.0
3.0
2.9
2.85
2.85
2.85
2.85
2.85
2.85
2.8
2.8
2.8
2.8
2.8
2.7
2.7
2.5
2.5
2.5
1.85
1.85
1.8
1.8
1.5
1.5
1.5
1.5
VO2 VOLTAGE
(V) (Note 2)
3.3
2.8
2.5
1.8
3.3
3.0
2.7
2.9
3.3
2.85
2.8
2.5
1.85
1.8
3.3
3.0
2.6
1.8
1.5
1.85
1.8
2.8
2.0
1.8
2.9
1.85
2.8
1.8
2.9
2.8
1.8
1.5
TEMP RANGE
(°C)
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
PACKAGE
(Pb-Free)
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
10 Ld 3x3 DFN
PKG
DWG. #
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
L10.3x3C
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March 26, 2014
ISL9000A
Evaluation Board Ordering Information
PART
NUMBER
ISL9000AIRNNZ-EVZ
ISL9000AIRNJZ-EVZ
ISL9000AIRNFZ-EVZ
ISL9000AIRNCZ-EVZ
ISL9000AIRMNZ-EVZ
ISL9000AIRMMZ-EVZ
ISL9000AIRMGZ-EVZ
ISL9000AIRLLZ-EVZ
ISL9000AIRKNZ-EVZ
ISL9000AIRKKZ-EVZ
ISL9000AIRKJZ-EVZ
ISL9000AIRKFZ-EVZ
ISL9000AIRKPZ-EVZ
ISL9000AIRKCZ-EVZ
ISL9000AIRJNZ-EVZ
ISL9000AIRJMZ-EVZ
ISL9000AIRJRZ-EVZ
ISL9000AIRJCZ-EVZ
ISL9000AIRJBZ-EVZ
ISL9000AIRGPZ-EVZ
ISL9000AIRGCZ-EVZ
ISL9000AIRFJZ-EVZ
ISL9000AIRFDZ-EVZ
ISL9000AIRFCZ-EVZ
ISL9000AIRPLZ-EVZ
ISL9000AIRPPZ-EVZ
ISL9000AIRPPZ-EVZ
ISL9000AIRCCZ-EVZ
ISL9000AIRBLZ-EVZ
ISL9000AIRBJZ-EVZ
ISL9000AIRBCZ-EVZ
ISL9000AIRBBZ-EVZ
VO1 VOLTAGE
(V)
3.3
3.3
3.3
3.3
3.0
3.0
3.0
2.9
2.85
2.85
2.85
2.85
2.85
2.85
2.8
2.8
2.8
2.8
2.8
2.7
2.7
2.5
2.5
2.5
1.85
1.85
1.8
1.8
1.5
1.5
1.5
1.5
VO2 VOLTAGE
(V)
3.3
2.8
2.5
1.8
3.3
3.0
2.7
2.9
3.3
2.85
2.8
2.5
1.85
1.8
3.3
3.0
2.6
1.8
1.5
1.85
1.8
2.8
2.0
1.8
2.9
1.85
2.8
1.8
2.9
2.8
1.8
1.5
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FN6391.2
March 26, 2014
