ISL9001 INTERSIL [Intersil Corporation], ISL9001 Datasheet - Page 8

• Manufacturer Part Number: ISL9001
• Description: LDO with Low ISUPPLY, High PSRR
• Manufacturer: INTERSIL [Intersil Corporation]

Pin Description
Typical Application
NUMBER
PIN
1
2
3
4
5
6
7
8
VIN (2.3V TO 5V)
ENABLE
PIN NAME
CPOR
CBYP
GND
POR
VIN
EN
NC
VO
OFF
ON
Supply Voltage/LDO Input:
Connect a 1µF capacitor to GND.
LDO Enable.
Reference Bypass Capacitor Pin:
Optionally connect capacitor of value 0.01µF to 0.1µF between this pin and GND to achieve lowest noise and
highest PSRR.
POR Delay Setting Capacitor Pin:
Connect a capacitor between this pin and GND to delay the POR output release after the 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.
Do not connect.
Open-drain POR Output (active-low):
Internally connected to VO through 100kΩ resistor.
LDO Output:
Connect capacitor of value 1µF to 10µF to GND (1µF recommended).
8
C1
C2
C1, C3: 1µF X5R CERAMIC CAPACITOR
C4: 0.01µF X7R CERAMIC CAPACITOR
C4
C2: 0.1µF X7R CERAMIC CAPACITOR
1
2
3
4
VIN
EN
CBYP
CPOR
ISL9001
ISL9001
POR
GND
VO
8
7
5
DESCRIPTION
C3
V
OUT
V
TOO LOW
OUT
OK
V
RESET
(200ms DELAY,
C4 = 0.01µF)
OUT
March 28, 2008
FN9231.2