ltc1876eg-trpbf Linear Technology Corporation, ltc1876eg-trpbf Datasheet - Page 10
![no-image](/images/manufacturer_photos/0/3/389/linear_technology_corporation_sml.jpg)
ltc1876eg-trpbf
Manufacturer Part Number
ltc1876eg-trpbf
Description
High Efficiency, 2-phase, Dual Synchronous Step-down Switching Controller And Step-up Regulator
Manufacturer
Linear Technology Corporation
Datasheet
1.LTC1876EG-TRPBF.pdf
(36 pages)
- Current page: 10 of 36
- Download datasheet (359Kb)
LTC1876
FUNCTIONAL DIAGRA
10
R6
R5
V
U
IN
+
V
5V
SEC
FREQSET
STBYMD
3.3V
EXTV
PGOOD
INTV
SGND
FCB
V
IN
OUT
CC
0.18 A
CC
U
4.8V
+
–
COMPARATOR
OSCILLATOR
4.5V
0.8V
WINDOW
+
–
1.19V
1M
–
+
+
–
BOOST
REGULATOR
AUXV
1.26V
V
INTERNAL
SUPPLY
REF
V
FB
LDO
REG
5V
R8
REF
CLK1
CLK2
V
V
OSENSE1
OSENSE2
BINH
FCB
+
–
EA
R7
AUX
DUPLICATE FOR SECOND
CONTROLLER CHANNEL
W
AUXSD
GENERATOR
R
C
C
RAMP
C
1.2 A
6V
–
+
A1
4(V
0.86V
AUX
FB
SLOPE
COMP
)
I1
S
R
AUXV
+
–
R
S
OSCILLATOR
0.55V
Q
Q
–
OSC
1.2MHz
IN
DROP
Q
Q
OUT
DET
45k
AUX
Figure 2
–
+
+
4(V
SHDN
+
RST
FB
B
3mV
)
BOT
RUN/SS1
–
TOP ON
+
–
AUXPGND
SHDN
FCB
START
45k
SOFT
RUN
–
+
OV
AUXSW
2.4V
L3
EA
I2
SWITCH
–
+
+
–
LOGIC
V
FB
D5
0.80V
0.86V
TOP
BOT
INTV
CC
INTV
+
30k
30k
CC
V
SENSE
SENSE
RUN/SS
C
BOOST
AUXV
PGND
OSENSE
OUTAUX
SW
TG
BG
I
TH
OUT
+
–
INTV
CC
R1
D
C
C
C
B
R2
C2
SS
B
D
C
SEC
C
V
IN
R
C
D
R
1
SENSE
+
C
C
IN
SEC
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