Datasheet

LTC1960
10
1960fb
BLOCK DIAGRAM
SPI
INTERFACE
11-BIT ∆Σ
VOLTAGE DAC
10-BIT ∆Σ
CURRENT DAC
SELECTOR
CONTROLLER
CHARGE
+
–
+
–
+
–
+
–
–
–
–
–
–
1.19V
100Ω
100mV
SWB1
DRIVER
CHARGE
PUMP
SWB2
DRIVER
SWDC
DRIVER
CSN
+
–
ON
+
–
ON
DCIN
GCH1
SCH2
GCH2
SCH1
TGATE
PGND
BGATE
SW
BAT1
GND
V
CC
DCIN
DCIN
V
SET
V
PLUS
BAT2
V
CC
REGULATOR
OSCILLATOR
LOW DROP
DETECT
T
ON
+
BOOST
BGATE
V
CC
PWM
LOGIC
CHGMON
400k
0.86V
0.8V
+
+
+
+
Q
S
R
CHARGE
100mV
CLP
+
CHGMON
0.75V
40mV
+
–
÷15
SCN
GB1I GB1O GB2I GB2O GDCI GDCO
SHORT CIRCUIT
AC_PRESENT
SCP
SCN
DCDIV
LOPWR
MOSI
MISO
SCK
SSB
CSP
CSN
I
SET
CA1
3k
3k
0.8V
BUFFERED I
TH
g
m
= 1.4m
Ω
g
m
= 0.4m
Ω
CLAMP
I
REV
I
CMP
I
TH
COMP1
EA
0V
11
1960 BD
CSP-CSN
3kΩ
g
m
= 1.4m
Ω
24
26
27
30
32
31
13
29
16
28
1
2
3
36
35
33
34
9 8 11 10
7 6
25 14
5
4
17
12
21
20
19
18
15
23
22
CL1
CA2
–
–
+
(LTC1960CG Pin Numbers Shown)