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LT3688IFEPBF Datasheet(PDF) 9 Page - Linear Technology

Part # LT3688IFEPBF
Description  Dual 800mA Step-Down Switching Regulator with Power-On Reset
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3688IFEPBF Datasheet(HTML) 9 Page - Linear Technology

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LT3688
9
3688f
PIN FUNCTIONS (QFN/TSSOP)
CPOR1, CPOR2 (Pins 23, 21/Pins 20, 18): Place a capacitor
between this pin and ground to set the power-on-reset
timeout period.
CWDT (Pin 24/Pin 21): Place a capacitor between this pin
and ground to set the fast and slow watchdog timer periods.
Exposed Pad (Pin 25/Pin 25): Ground. Tie the exposed
pad directly to the ground plane. The exposed pad metal
of the package provides both electrical contact to ground
and good thermal contact to the printed circuit board. The
device must be soldered to the circuit board for proper
operation.
BLOCK DIAGRAM
+
+
BST2
SW2
DA2
RSEN2
DISABLE
Q
S
R
RT
RT
SLAVE
OSCILLATOR
MASTER
OSCILLATOR
INTERNAL
0.8V REF
ERROR
AMP
SLOPE COMP
SWITCH
LATCH
Burst Mode
OPERATION
DETECT
ADJUSTABLE
RESET PULSE
GENERATOR
VC CLAMP
C5
CC
VIN
3.4V
RC
VC
C4
OUT2
L2
FB2
RUN/SS2
CPOR2
2.5μA
22μA
3688 BD01
RST2
BIAS
OUT1
SYNC
VIN
VIN
EN/UVLO
ON OFF
+
+
BST1
SW1
DA1
RSEN1
Q
S
R
SLAVE
OSCILLATOR
CONFIGURATION
LOGIC
WATCHDOG
TIMER
TRANSITION
DETECT
SLOPE COMP
SWITCH
LATCH
Burst Mode
OPERATION
DETECT
ADJUSTABLE
RESET PULSE
GENERATOR
VC CLAMP
OUT1
FB1
R2
R1
C2
C3
L1
RUN/SS1
CPOR1
2.5μA
2μA
22μA
22μA
RST1
CWDT
WDE
WDI
WDO
CONFIG
GND
THREE-STATE
DECODE
80mV
C1


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