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LTC1707CS8 数据表(PDF) 3 Page - Linear Technology

部件名 LTC1707CS8
功能描述  High Efficiency Monolithic Synchronous Step-Down Switching Regulator
PDF  16 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1707CS8 数据表(HTML) 3 Page - Linear Technology

  LTC1707CS8 Datasheet HTML 1Page - Linear Technology LTC1707CS8 Datasheet HTML 2Page - Linear Technology LTC1707CS8 Datasheet HTML 3Page - Linear Technology LTC1707CS8 Datasheet HTML 4Page - Linear Technology LTC1707CS8 Datasheet HTML 5Page - Linear Technology LTC1707CS8 Datasheet HTML 6Page - Linear Technology LTC1707CS8 Datasheet HTML 7Page - Linear Technology LTC1707CS8 Datasheet HTML 8Page - Linear Technology LTC1707CS8 Datasheet HTML 9Page - Linear Technology Next Button
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3
LTC1707
Efficiency vs Input Voltage
INPUT VOLTAGE (V)
0
90
95
100
8
1707 G01
85
80
75
2
4
6
10
VOUT = 2.5V
L = 15
µH
Burst Mode OPERATION
ILOAD = 100mA
ILOAD = 300mA
ILOAD = 10mA
OUTPUT CURRENT (mA)
1
70
65
60
55
50
90
95
100
10
100
1000
1707 G02
85
80
75
Burst Mode
OPERATION
PULSE SKIPPING
MODE
VIN = 3.6V
VOUT = 2.5V
L = 15
µH
OUTPUT CURRENT (mA)
1
70
90
95
100
10
100
1000
1707 G03
85
80
75
VOUT = 2.5V
L = 15
µH
Burst Mode OPERATION
VIN = 2.8V
VIN = 3.6V
VIN = 7.2V
Efficiency vs Load Current
Efficiency vs Load Current
Undervoltage Lockout Threshold
vs Temperature
TEMPERATURE (
°C)
–50
– 25
2.50
2.55
2.60
2.70
2.75
2.80
75
100
3.00
1707 G04
2.65
0
25
50
125
2.85
2.90
2.95
VIN
RAMPING UP
VIN
RAMPING DOWN
DC Supply Current
vs Input Voltage
INPUT VOLTAGE (V)
2.5
50
100
150
6.5
350
1707 G05
0
4.5
3.5
7.5
5.5
8.5
200
250
300
TJ = 25°C
VOUT = 1.8V
LOAD CURRENT = 0A
Burst Mode
OPERATION
PULSE SKIPPING
MODE
Supply Current in Shutdown
vs Input Voltage
INPUT VOLTAGE (V)
2.5
4
6
10
12
14
6.5
22
1707 G06
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
Reference Voltage
vs Temperature
Oscillator Frequency
vs Temperature
TEMPERATURE (
°C)
–50
– 25
1.180
1.185
1.190
75
100
1.200
1707 G07
0
25
50
125
1.195
VIN = 5V
Oscillator Frequency
vs Input Voltage
TEMPERATURE (
°C)
–50
– 25
300
310
330
340
350
75
100
390
1707 G08
320
0
25
50
125
360
370
380
VIN = 5V
INPUT VOLTAGE (V)
2.5
300
310
330
340
350
6.5
390
1627 G09
320
4.5
3.5
7.5
5.5
8.5
360
370
380
TYPICAL PERFOR A CE CHARACTERISTICS



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