LT1171HVCQ#PBF Linear Technology, LT1171HVCQ#PBF Datasheet - Page 8
![IC SWTCHNG REGULATOR HI-EFF 5-DD](/photos/7/55/75544/161-5-dd_sml.jpg)
LT1171HVCQ#PBF
Manufacturer Part Number
LT1171HVCQ#PBF
Description
IC SWTCHNG REGULATOR HI-EFF 5-DD
Manufacturer
Linear Technology
Type
Step-Down (Buck), Step-Up (Boost), Inverting, Cuk, Flyback, Forward Converterr
Datasheet
1.LT1172CN8PBF.pdf
(24 pages)
Specifications of LT1171HVCQ#PBF
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.25 ~ 60 V
Current - Output
2.5A
Frequency - Switching
100kHz
Voltage - Input
3 ~ 60 V
Operating Temperature
0°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
D²Pak, TO-263 (5 leads + tab)
Power - Output
100W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
TYPICAL PERFORMANCE CHARACTERISTICS
LT1170/LT1171/LT1172
BLOCK DIAGRAM
8
–1000
7000
6000
5000
4000
3000
2000
1000
0
1k
Transconductance of Error
Amplifier
†
ALWAYS CONNECT E1 TO THE GROUND PIN ON MINIDIP, 8- AND 16-PIN SURFACE MOUNT PACKAGES.
E1 AND E2 INTERNALLY TIED TO GROUND ON TO-3 AND TO-220 PACKAGES.
FB
10k
SELECT
100kHz
MODE
1.24V
2.3V
REG
OSC
REF
V
IN
FREQUENCY (Hz)
+
–
100k
ERROR
AMP
g
m
1M
SHUTDOWN
CIRCUIT
1170/1/2 G19
10M
LOGIC
COMP
0.15V
–30
0
30
60
90
120
150
180
210
V
C
(LT1170 AND LT1171 ONLY)
FLYBACK
ERROR
AMP
GAIN
CURRENT
DRIVER
ANTI-
SAT
AMP
≈
500
490
480
470
460
450
440
430
420
410
400
6
–50
Normal/Flyback Mode Threshold on
Feedback Pin
+
–
16V
–25
SWITCH
5A, 75V
FEEDBACK PIN VOLTAGE
FEEDBACK PIN CURRENT
SWITCH
(AT THRESHOLD)
0
OUT
(AT THRESHOLD)
E1
TEMPERATURE (°C)
†
25
0.02Ω
(0.04Ω
(0.16Ω
50
LT1172
LT1171)
LT1172)
75
100 125 150
E2
0.16Ω
1170/1/2 G20
1170/1/2 BD
–24
–22
–20
–18
–16
–14
–12
–10
–8
–6
–4
117012fg