LTC1478 Linear Technology, LTC1478 Datasheet - Page 7

• Manufacturer Part Number: LTC1478
• Description: Single and Dual Protected High Side Switches
• Manufacturer: Linear Technology

TYPICAL APPLICATIONS
0.1 F
5V
Adding Short-Circuit Protection to an LT1301 Step-Up Switching Regulator (0.01 A Standby Current)
*PRIMARY Li-Ion BATTERY PROTECTION MUST BE PROVIDED BY AN INDEPENDENT CIRCUIT
(2.7V to 4.2V)
+
SINGLE
Li-Ion
CELL*
ON/OFF
100 F
16V
*ALLOW AT LEAST 100ms BETWEEN 5V AND 3.3V SWITCHING FOR DISCHARGE OF 100 F OUTPUT CAPACITOR
Single Li-Ion Cell to 5V Converter/Switch with Load Disconnect Below 2.7V
5V to 3.3V Selector Switch with Slope Control and 0.01 A Standby Current
*COILCRAFT DO1608-103
562k
1%
432k
1%
V
V
V
EN
OUT
IN1
INS
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
LTC1477
3.3V ON/OFF*
0.1 F
5V ON/OFF*
0.1 F
220k
3.3V
NC
5V
6
1
7
V
GND
I
LBI
SHDN
V
V
LIM
OUT
V
IN2
IN3
IN
3
LT1304CS8-5
CD54-220
SUMIDA
22 H
5
SENSE
+
SW
LBO
AV
AV
AV
AEN
GND
BV
BV
BV
MBRS130LT3
4
OUT
IN1
INS
IN3
IN2
OUT
100 F
10V
8
2
LTC1478
+
AV
BV
AV
AV
BV
BV
GND
100 F
10V
TANT
BEN
OUT
OUT
INS
2
3
IN2
IN3
IN1
(5V)
SEL
SHDN
PGND
V
IN
8
6
LT1301
10 H
L1*
V
V
V
EN
OUT
IN1
INS
SENSE
GND
SW
I
1
LIM
7
LTC1477/1478 • TA08
LTC1477
4
5
LTC1477/1478 • TA09
MBRS130LT3
LTC1477/LTC1478
NC
1k
V
V
GND
V
OUT
D1
+
IN3
IN2
+
0.1 F
DN117 • F03
NC
NC
100 F
10V
5V/2A OR
3.3V/2A
+
12V
47 F
16V
TANT
1 F
5V
7