Datasheet

LTC4000-1
11
40001fa
For more information www.linear.com/LTC4001-1
R
C
R
NTC
BATTERY PACK
R
CL
C
C
R
CS
SYSTEM
LOAD
IN
CSN
BGATE
IGATE
CL
A2
LINEAR
GATE
DRIVER
AND
VOLTAGE
CLAMP
ENABLE
CHARGING
A1
BATTERY IDEAL DIODE
AND INSTANT-ON DRIVER
INPUT IDEAL
DIODE DRIVER
ITH AND CC DRIVER
OFB
OFB
A7
A4
CP1
1.193V
1V
BFB
FBG
BAT
CX
ITHRSTCLN CC IID
R
OFB2
R
OFB1
R
BFB2
R
BFB1
R
IS
DC/DC CONVERTER
IN
C
IID
VM
BIAS
TMR
F LTCHRG
C
IN
C
CLN
C
L
C
BAT
C
TMR
R
VM1
R
VM2
C
IBMON
40001 BD
ENCGND
IBMON
OUT
CSP
R
CX
R3
+
+
1V
+
+
BIAS
2µA
BIAS
5µA/
50µA
C
IIMON
IIMON
IFB
IN
A8
g
m
= 0.33m
A9
g
m
= 0.33m
A11
0.974V
g
m
BFB
A6
1.136V
A10
1.193V
CP5
+
1.109V
CP6
+
0.771V
CP2
+
BIAS
5µA
10mV
A5
60k
8mV
C
BIAS
OSCILLATOR
LOGIC
CP3
+
+
CP4
TOO HOT
NTC FAULT
TOO COLD
NTC
LDO,
BG,
REF
REF
+
+
+
g
m
g
m
+
g
m
g
m
g
m
8mV
+
+
+
60k
R
IFB2
R
IFB1
10M
block DiagraM
Figure 1. LTC4000-1 Functional Block Diagram