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LTC1705 Datasheet(PDF) 5 Page - Linear Technology

Part No. LTC1705
Description  Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO
Download  28 Pages
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LTC1705 Datasheet(HTML) 5 Page - Linear Technology

 
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LTC1705
5
ILOAD (A)
0
0.5
1
1.5
2
2.5
1705 G07
100
90
80
70
60
50
VIN = 5V, VOUT = 1.5V, TA = 25°C,
CORE DISABLED, QTIO = QBIO = NDS8926
TEMPERATURE (
°C)
–50
–25
0
25
50
75
100
125
1705 G09
24
22
20
18
16
14
12
10
VIN = 5V, VOUT = 1.6V, ∆VOUT = –1%,
RIMAXC = 24.9k, QTC = QBC = 2× FDS6670A
LOAD CURRENT (A)
0
4
8
12
16
20
1705 G10
2.0
1.5
1.0
0.5
0
TA = 25°C, VIN = 5V,
VOUT = 1.6V,
QBC = 2
× FDS6670A,
RIMAXC = 24.9k,
CRUNSS = 0.01µF
TEMPERATURE (
°C)
–50
–25
0
25
50
75
100
125
1705 G11
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
VINCLK = 3.3V
VINCLK (V)
3
3.5
4
4.5
5
5.5
6
1705 G12
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
0.10
0.08
0.06
0.04
0.02
0
–0.02
–0.04
–0.06
–0.08
–0.10
TA = 25°C
1705 G13
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
0.02
0
–0.02
–0.04
–0.06
–0.08
–0.10
IOUTCLK (mA)
–150
–125
–100
–75
–50
–25
0
TA = 25°C
TEMPERATURE (
°C)
–50
–25
0
25
50
75
100
125
1705 G14
500
450
400
350
300
250
200
150
100
IOUTCLK = –150mA
TEMPERATURE (
°C)
–50
–25
0
25
50
75
100
125
1705 G15
–150
–190
–230
–270
–310
–350
VINCLK = 3.3V
TYPICAL PERFOR A CE CHARACTERISTICS
I/O Supply Efficiency
VOUTC 0A To 10A Load Step
Current Limit Threshold vs
Temperature
0A TO 10A
LOAD
5A/DIV
VOUT = 1.6V
AC 50mV/
DIV
5ms/DIV
1705 G08
VOUTC vs Load Current
VOUTCLK vs Temperature
VOUTCLK Line Regulation
VOUTCLK Load Regulation
VOUTCLK Dropout Voltage vs
Temperature
VOUTCLK Short-Circuit Current vs
Temperature


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