LT3579IUFD-1-PBF Просмотр технического описания (PDF) - Linear Technology
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LT3579IUFD-1-PBF Datasheet PDF : 40 Pages
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LT3579/LT3579-1
BLOCK DIAGRAM
VIN
CIN
L1
RFAULT
D1
COUT1
OPTIONAL
M1
RGATE
VOUT
COUT
GATE
FAULT
SOFT-
START
VC
2.1V
933μA
DIE TEMP 16.2V
165°C
VIN
750mV
SW1
**
42V (MIN)
1.17V
SS
CSS
50mV +
– 1.8V +
250k
–
STARTUP
& FAULT
LOGIC
DRIVER
DISABLE
SW2
** 42V (MIN)
ISW1
3.4A (MIN)
TD ~ 30ns
VBE • 0.9
FB
45mV
SW2
SHDN
+
1.33V –
VIN
1.215V
REFERENCE
UVLO
COMPARATOR
–
A3
+
SR1
DRIVER
R
Q
S
Q2
SW1
15.4m
Q1
+
14.6k
A1
–
FB
∑
RAMP
GENERATOR
RS
A4
12m
RFB
GND
14.6k
+
A2
–
FREQUENCY ÷N ADJUSTABLE
FOLDBACK
OSCILLATOR
SS
SYNC
BLOCK
VC
RC
CC
SYNC
RT
CLKOUT
RT
3579 BD
** SW OVERVOLTAGE PROTECTION IS NOT GUARANTEED TO PROTECT THE LT3579/LT3579-1 DURING SW OVERVOLTAGE EVENTS.
Figure 1. Block Diagram
35791f
8
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