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LTC1878 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC1878
Description  High Efficiency Monolithic Synchronous Step-Down Regulator
Download  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1878 Datasheet(HTML) 4 Page - Linear Technology

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4
LTC1878
Reference Voltage
vs Temperature
TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency
vs Temperature
Efficiency vs Output Current
OUTPUT CURRENT (mA)
75
85
95
70
80
90
0.1
10
100
1000
1878 G04
65
1
VIN = 3V
VIN = 6V
VIN = 3.6V
VIN = 4.2V
VOUT = 1.8V
L = 10
µH
TEMPERATURE (
°C)
–50
0.814
0.809
0.804
0.799
0.794
0.789
0.784
25
75
1878 G05
–25
0
50
100
125
VIN = 3.6V
TEMPERATURE (
°C)
–50
605
595
585
575
565
555
545
535
525
515
505
495
100
75
1878 G06
–25
0
50
25
125
VIN = 3.6V
Oscillator Frequency
vs Supply Voltage
SUPPLY VOLTAGE (V)
0
545
535
525
565
555
8
1878 G07
515
505
495
2
4
6
605
595
585
575
LOAD CURRENT (mA)
0
1.77
1.78
1.80
1.81
1.82
200
400 500
900
1878 G08
1.79
100
300
600 700 800
1.83
PULSE SKIPPING MODE
VIN = 3.6V
L = 10
µH
INPUT VOLTAGE (V)
1
0
0.5
0.6
0.7
5678
1878 G09
0.4
0.3
0
0.1
2
3
4
0.2
0.9
0.8
SYNCHRONOUS
SWITCH
MAIN
SWITCH
Reference Voltage
vs Temperature
Output Voltage vs Load Current
RDS(ON) vs Input Voltage
RDS(ON) vs Temperature
DC Supply Current
vs Input Voltage
DC Supply Current
vs Temperature
TEMPERATURE (
°C)
–50
–25
0.3
0.4
0.6
0.7
0.8
75
100
1.2
1878 G10
0.5
0
25
50
125
0.9
1.0
1.1
VIN = 3V
VIN = 5V
SYNCHRONOUS SWITCH
MAIN SWITCH
INPUT VOLTAGE (V)
01
0
100
250
2
4
5
1878 G11
50
200
150
3
6
7
VOUT = 1.8V
PULSE SKIPPING
MODE
Burst Mode
OPERATION
TEMPERATURE (
°C)
–50
300
250
200
150
100
50
0
25
75
1878 G12
–25
0
50
125
100
PULSE SKIPPING
MODE
Burst Mode
OPERATION
VIN = 3.6V


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