LT4256-3CGNTR Linear Technology, LT4256-3CGNTR Datasheet - Page 20

• Manufacturer Part Number: LT4256-3CGNTR
• Manufacturer: Linear Technology

Specifications of LT4256-3CGNTR

• Family Name: LT4256-3
• Package Type: SSOP N
• Operating Supply Voltage (min): 10.8V
• Operating Supply Voltage (max): 80V
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Product Depth (mm): 3.99mm
• Product Height (mm): 1.5mm
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Not Compliant

APPLICATIO S I FOR ATIO
LT4256-3
20
RELATED PARTS
PART NUMBER
LT1641-1/LT1641-2
LTC4211
LTC4251
LTC4252-1/LTC4252-2 – 48V Hot Swap Controller in MSOP
LTC4253
LT4254
LT4256-1/LT4256-2
48V
V
GND
IN
0.01µF
0.01µF
(SHORT PIN)
C3
C3
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
R1
64.9k
R2
4.02k
R3
4.02k
R1
64.9k
R2
4.02k
R3
4.02k
33nF
C2
33nF
DESCRIPTION
Positive 48V Hot Swap Controller in SO-8
Single Hot Swap Controller with Multifunction Current Control 2.5V to 16.5V, Active Inrush Limiting, Dual Level Cicuit Breaker
– 48V Hot Swap Controller in SOT-23
– 48V Hot Swap Controller and Supply Sequencer
Positive High Voltage Hot Swap Controller
Positive High Voltage Hot Swap Controller
D2
SMAT70A
U
●
FAX: [phone]
UV
OV
OPEN
TIMER
UV
OV
OPEN
TIMER
V
V
CC
CC
LT4256-3
LT4256-3
0.020Ω
0.020Ω
U
GND
GND
R5
R5
SENSE
SENSE
PWRGD
PWRGD
RETRY
RETRY
GATE
GATE
V
V
OUT
OUT
FB
FB
10Ω
10Ω
W
R6
R6
IRF540
IRF540
●
Q2
Q1
www.linear.com
100Ω
100Ω
R7
R7
Dual 48V Supply Sequencing Application
UV = 36V
OV = 73V
PWRGD = 40V
UV = 36V
OV = 73V
PWRGD = 40V
10nF
10nF
D1
CMPZ5241BS
11V
D3
CMPZ5241BS
11V
C1
C1
U
R8
36.5k
R8
36.5k
4.02k
4.02k
R9
R9
4256 TA03
R4
51k
R4
51k
+
+
PWRGD2
PWRGD1
C
C
L2
L1
COMMENTS
9V to 80V Operation, Active Current Limit, Autoretry/Latchoff
Floating Supply from –15V, Active Current Limiting,
Fast Circuit Breaker
Floating Supply from –15V, Active Current Limiting,
Power Good Output
Floating Supply from –15V, Active Current Limiting,
Enables Three DC/DC Converters
10.8V to 36V Operation, Open-Circuit Detection
10.8V to 80V Operation, Active Current Limit, Autoretry/Latchoff
V
48V
2A
V
48V
2A
OUT2
OUT1
PWRGD1
50V/DIV
50V/DIV
50V/DIV
50V/DIV
V
V
OUT1
OUT2
V
IN
© LINEAR TECHNOLOGY CORPORATION 2004
C
C
L1
L2
= 200µF
= 147µF
LT/LWI/LT 0705 REV A • PRINTED IN USA
5ms/DIV
42563fa
4256 TA04