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LTC1627CS8 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC1627CS8
Description  Monolithic Synchronous Step-Down Switching Regulator
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1627CS8 Datasheet(HTML) 4 Page - Linear Technology

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4
LTC1627
TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency
vs Temperature
TEMPERATURE (
°C)
–50
– 25
300
310
330
340
350
75
100
390
1627 G10
320
0
25
50
125
360
370
380
VIN = 5V
VSYNC/FCB = 0V
Maximum Output Load Current
vs Input Voltage
INPUT VOLTAGE (V)
2.5
200
300
500
600
700
6.5
1100
1627 G12
400
4.5
3.5
7.5
5.5
8.5
800
900
1000
VDR = –VIN
VDR = 0V
VOUT = 2.5V
L = 15
µH
INPUT VOLTAGE (V)
2.5
300
310
330
340
350
6.5
390
1627 G11
320
4.5
3.5
7.5
5.5
8.5
360
370
380
VSYNC/FCB = 0V
Oscillator Frequency
vs Input Voltage
TEMPERATURE (
°C)
–50
– 25
0
200
600
800
1000
75
100
1800
1627 G13
400
0
25
50
125
1200
1400
1600
VIN = 8.4V
VDR = 0V
SYNCHRONOUS
SWITCH
MAIN
SWITCH
Switch Leakage Current
vs Temperature
Switch Resistance
vs Temperature
TEMPERATURE (
°C)
–50
– 25
0
0.1
0.3
0.4
0.5
75
100
0.9
1627 G14
0.2
0
25
50
125
0.6
0.7
0.8
VIN = 5V
VDR = 0V
SYNCHRONOUS
SWITCH
MAIN
SWITCH
Switch Resistance
vs Input Voltage
INPUT VOLTAGE (V)
2.5
0
0.1
0.3
0.4
0.5
6.5
0.9
1627 G15
0.2
4.5
3.5
7.5
5.5
8.5
0.6
0.7
0.8
VDR = 0V
SYNCHRONOUS SWITCH
MAIN SWITCH
Load Step Transient Response
VOUT
50mV/DIV
AC COUPLED
ITH
0.5V/DIV
ILOAD
500mA/DIV
25
µs/DIV
VIN = 5V
VOUT = 3.3V
L = 15
µH
CIN = 22µF
COUT = 100µF
ILOAD = 0mA TO 500mA
Burst Mode OPERATION
1627 G16
VOUT
20mV/DIV
AC COUPLED
ILOAD
200mA/DIV
10
µs/DIV
VIN = 5V
VOUT = 3.3V
L = 15
µH
CIN = 22µF
COUT = 100µF
ILOAD = 50mA
1627 G18
VOUT
50mV/DIV
AC COUPLED
ITH
0.5V/DIV
ILOAD
500mA/DIV
25
µs/DIV
VIN = 5V
VOUT = 3.3V
L = 15
µH
CIN = 22µF
COUT = 100µF
ILOAD = 0mA TO 500mA
FORCED CONTINUOUS MODE
1627 G17
Load Step Transient Response
Burst Mode Operation
SW
5V/DIV



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