LM34919C-Q1 Datasheet, PDF (7/29 Pages) Texas Instruments – LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator

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LM34919C-Q1
SNVS831A – SEPTEMBER 2013 – REVISED DECEMBER 2013
4.5V to 50V
Input
VIN
C5
C1
7V SERIES
REGULATOR
VCC
UVLO
LM34919C
VCC
C3
GND
RPGD
Power
Good
RON
RON
2.1V
ON TIMER
RON _START
FINISH
OFF TIMER
START
FINISH
EN
SS
C6
2.52V
10.5 µA
LOGIC
Driver
Gate Drive SD
UVLO
LEVEL
SHIFT
FB
REGULATION
COMPARATOR
0.92VREF
UNDER-VOLTAGE
COMPARATOR
1.2VREF
THERMAL
SHUTDOWN
CURRENT LIMIT
COMPARATOR ₊
-
-
64 mV ₊
PGD
OVER-VOLTAGE
COMPARATOR
BST
VIN
C4
L1
SW
D1
RSENSE
100 m
ISEN
SGND
VOUT
R1
R3
C2
R2
GND
RTN
Figure 5. Functional Block Diagram
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