LTC3789 LINER [Linear Technology], LTC3789 Datasheet - Page 12

• Manufacturer Part Number: LTC3789
• Description: High Voltage High Current Controller for Battery Charging and Power Management
• Manufacturer: LINER [Linear Technology]

LTC4000
block DiagraM
12
IN
C
BIAS
R
R
R
IL
VM1
VM2
VM
IIMON
IL
BIAS
NTC
C
IN
BIAS
LDO,
REF
BG,
IN
50µA
IN
R
IS
REF
A8
g
+
–
+
–
CLN
m
1.193V
60k
= 0.33m
GND
CP4
CP3
–
+
TOO COLD
TOO HOT
C
CLN
CP1
BIAS
NTC FAULT
2µA
1V
DC/DC CONVERTER
RST
Figure 1. LTC4000 Functional Block Diagram
+
–
–
ENC
g
A4
m
ITH
R
A10
g
C
CHRG
m
–
LOGIC
C
CC
ITH AND CC DRIVER
C
IID
A5
g
A7
g
A6
g
C
m
m
m
8mV
–
+
–
+
–
+
–
DIODE DRIVER
OFB
BFB
INPUT IDEAL
FLT
+
–
1V
1.193V
1.136V
A1
IID
CP2
IGATE
60k
–
+
+ –
8mV
A2
OSCILLATOR
g
0.974V
AND INSTANT-ON DRIVER
m
BATTERY IDEAL DIODE
10mV
–
A11
+
OUT
g
IBMON
m
CP6
CP5
= 0.33m
ENABLE
CHARGING
C
IBMON
VOLTAGE
A9
DRIVER
LINEAR
CLAMP
GATE
AND
–
+
+
–
BIAS
+
–
BIAS
0.771V
1.109V
5µA/
50µA
BGATE
5µA
TMR
CSP
CSN
OFB
BFB
FBG
BAT
4000 BD
CL
CX
C
TMR
R
CL
R
R
R
OFB1
OFB2
CX
C
C
L
BAT
R
R
BFB2
BFB1
+
–
BATTERY PACK
R
CS
SYSTEM
LOAD
R
NTC
4000f
R3