isl9211a Intersil Corporation, isl9211a Datasheet - Page 4

• Manufacturer Part Number: isl9211a
• Description: Charging System Safety Circuit
• Manufacturer: Intersil Corporation

Block Diagram
Typical Operating Performance
FIGURE 2. CAPTURED WAVEFORMS FOR POWER-UP. THE
IN P U T
OUTPUT IS LOADED WITH A 10Ω RESISTOR
V IN
R
R
TIME - 4ms/DIV
1
2
F A U L T
Load Current(200mA/div)
1 .2 V
4
LOAD CURRENT (200mA/DIV)
P R E -R E G
OUT (2V/DIV)
P O R
R E F
VIN(2V/div)
OUT(2V/div)
V
Q
C P 1
IN
4
(2V/DIV)
G N D
D R IV E R
The test conditions for the Typical Operating Performance are: V
R
Q
F E T
ILIM
L O G IC
FIGURE 1. BLOCK DIAGRAM
2
Q
1
= 24.9kΩ, R
ISL9211A
E N
VB
C P 3
C P 2
= 200kΩ, Unless Otherwise Noted.
R
FIGURE 3. CAPTURED WAVEFORMS WHEN THE INPUT
4
E A
Q
0 .8 V
3
R
3
VOLTAGE STEPS FROM 5.5V TO 9.5V
O U T
IL IM
V B
TIME - 20µs/DIV
R
FAULT (5V/DIV)
IL IM
Fault(5V/div)
C H A R G E R
B A T T E R Y
R
IS L 6 2 9 2
V B
V
IN
VIN(2V/div)
IN
OUT (2V/DIV)
= 5V, T
OUT(2V/div)
(2V/DIV)
A
= +25°C,
April 2, 2009
FN6702.0