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LTC1627CS8 Datasheet(PDF) 3 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) 3 Page - Linear Technology

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LTC1627
TYPICAL PERFOR A CE CHARACTERISTICS
INPUT VOLTAGE (V)
0
90
95
100
8
1627 G01
85
80
75
2
4
6
10
VOUT = 2.5V
L = 15
µH
VDR = 0V
Burst Mode OPERATION
ILOAD = 100mA
ILOAD = 300mA
ILOAD = 10mA
Efficiency vs Input Voltage
OUTPUT CURRENT (mA)
1
70
90
95
100
10
100
1000
1627 G03
85
80
75
VIN = 3.6V
VOUT = 2.5V
L = 15
µH
VDR = 0V
Burst Mode
OPERATION
SYNCHRONIZED
AT 525kHz
FORCED
CONTINUOUS
OUTPUT CURRENT (mA)
1
70
90
95
100
10
100
1000
1627 G02
85
80
75
VIN = 3.6V
VOUT = 2.5V
L = 15
µH
Burst Mode OPERATION
VDR = 0V
VDR = –VIN
Efficiency vs Load Current
Efficiency vs Load Current
Undervoltage Lockout Threshold
vs Temperature
DC Supply Current*
vs Input Voltage
Efficiency vs Load Current
OUTPUT CURRENT (mA)
1
70
90
95
100
10
100
1000
1627 G04
85
80
75
VOUT = 2.5V
L = 15
µH
VDR = 0V
Burst Mode OPERATION
VIN = 2.8V
VIN = 3.6V
VIN = 7.2V
TEMPERATURE (
°C)
–50
– 25
2.30
2.35
2.45
2.50
2.55
75
100
2.75
1627 G05
2.40
0
25
50
125
2.60
2.65
2.70
VIN
RAMPING UP
VIN
RAMPING DOWN
INPUT VOLTAGE (V)
*DOES NOT INCLUDE GATE CHARGE CURRENT
2.5
100
150
250
300
350
6.5
550
1627 G06
200
4.5
3.5
7.5
5.5
8.5
400
450
500
TJ = 25°C
VOUT = 1.8V
SYNCHRONIZED AT 525kHz
Burst Mode OPERATION
Reference Voltage
vs Temperature
Forced Continuous Threshold
Voltage vs Temperature
Supply Current in Shutdown
vs Input Voltage
TEMPERATURE (
°C)
–50
– 25
0.790
0.792
0.796
0.798
0.800
75
100
0.808
1627 G08
0.794
0
25
50
125
0.802
0.804
0.806
VIN = 5V
TEMPERATURE (
°C)
–50
– 25
0.790
0.792
0.796
0.798
0.800
75
100
0.808
1627 G09
0.794
0
25
50
125
0.802
0.804
0.806
VIN = 5V
INPUT VOLTAGE (V)
2.5
4
6
10
12
14
6.5
22
1627 G07
8
4.5
3.5
7.5
5.5
8.5
16
18
20
VRUN/SS = 0V
TJ = 85°C
TJ = 25°C
TJ = –40°C



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