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LTC1704B Datasheet(PDF) 4 Page - Linear Technology

Part # LTC1704B
Description  550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1704B Datasheet(HTML) 4 Page - Linear Technology

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LTC1704/LTC1704B
4
1704bfa
TYPICAL PERFOR A CE CHARACTERISTICS
TEMPERATURE (
°C)
–50
0.804
0.808
0.812
25
75
1704 G01
0.800
0.796
–25
0
50
100
125
0.792
0.788
VCC = 5V
VCC (V)
3
–0.80
–0.48
–0.16
0.16
3.5
4
4.5
5
1704 G02
5.5
0.48
0.80
–0.64
–0.32
0
0.32
0.64
–0.10
–0.06
–0.02
0.02
0.06
0.10
–0.08
–0.04
0
0.04
0.08
6
TA = 25°C
ILOAD (A)
0
–0.6
0
0.6
12
1704 G03
–1.2
–1.8
369
15
–2.4
–3.0
–3.6
– 0.03
0.03
0
–0.07
–0.10
–0.13
–0.17
–0.20
TA = 25°C
VOUTSW = 1.8V
VFB Line Regulation
VOUTSW 0.5A to 5.5A Load Step
(Burst Mode Operation)
VOUTSW Load Regulation
100
µs/DIV
1704 G05
CH1: VOUTSW = 1.8V, AC 50mV/DIV
CH2: 0.5A to 5.5A LOAD, 5A DIV
VOUTSW 5A to 10A Load Step
50
µs/DIV
1704 G06
CH1: VOUTSW = 1.8V, AC 50mV/DIV
CH2: 5A to 10A LOAD, 5A DIV
20
µs/DIV
1704 G07
CH1: VOUTSW = 1.8V, AC 20mV/DIV
CH2: VTG, 5V DIV
VOUTSW Burst Mode Operation
at 1A Load
TEMPERATURE (
°C)
–50
18
20
24
25
75
1704 G08
16
14
–25
0
50
100
125
12
10
22
VIN = 5V
VOUTSW = 1.8V
∆VOUTSW = –1%
RIMAX = 13.7k
QT = QB = 2xFDS6670A
Switcher Current Limit Threshold
vs Temperature
VFB vs Temperature



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