ISL9021 Intersil Corporation, ISL9021 Datasheet - Page 6

• Manufacturer Part Number: ISL9021
• Description: Single LDO
• Manufacturer: Intersil Corporation

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Typical Operating Performance
Pin Descriptions
Typical Application
NAME
E-Pad
GND
PIN
VIN
VO
EN
IC Supply/LDO Input. Connect a 1µF capacitor to GND.
System ground pin.
LDO Enable. When this signal goes high, the LDO is turned on.
LDO Output. Connect a 1µF to 4.7µF capacitor to GND.
For µTDFN package option only. Connect it to the system ground.
VIN (1.5V TO 5.5V)
ENABLE
OFF
ON
6
C1
FIGURE 13. POWER SUPPLY REJECTION vs FREQUENCY
-20
-30
-40
-50
-60
-70
-80
-90
100
V
C
(Continued)
IN
OUT
= 4.5VDC + 50mVAC
= 1µF
I
I
O
O
= 10mA
VIN
EN
= 0A
1k
ISL9021
ISL9021
FREQUENCY (Hz)
GND
VO
DESCRIPTION
10k
C2
100k
VOUT
1M
C1, C2: 1µF X5R CERAMIC CAPACITOR
June 12, 2009
FN6867.1