lt1935es5-trpbf Linear Technology Corporation, lt1935es5-trpbf Datasheet - Page 3

• Manufacturer Part Number: lt1935es5-trpbf
• Description: 1.2mhz Boost Dc/dc Converter In Thinsot With 2a Switch
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
1.28
1.27
1.26
1.25
1.24
1
0
4
3
2
–50
0
FB Pin Voltage
Current Limit
T
A
–25
= 25°C
20
0
TEMPERATURE (°C)
DUTY CYCLE (%)
40
25
MIN
80
60
40
20
0
50
0
SHDN Pin Current
60
T
A
TYP
= 25°C
75
2
W
80
4
100
SHDN PIN VOLTAGE (V)
1935 G04
1935 G01
6
U
100
125
8
10
400
300
200
100
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
12
0
0
–50
Oscillator Frequency
Switch Saturation Voltage
0
14
1935 G07
–25
0.5
16
SWITCH CURRENT (A)
0
TEMPERATURE (°C)
1.0
T
25
A
= 85°C
1.5
1.4
1.2
1.0
0.8
0.6
0.4
0.2
50
0
T
A
0
Frequency Foldback
= 25°C
2.0
T
A
75
= 25°C
0.2
2.5
100
FEEDBACK VOLTAGE (V)
1935 G02
1935 G05
0.4
125
3.0
0.6
0.8
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.0
1
0
4
3
2
–50
0
Undervoltage Lockout
Peak Switch Current vs SHDN Pin
Voltage (Soft-Start)
50% DUTY CYCLE
T
A
1.2
= 25°C
–25
1935 G08
0.5
1.4
0
SHDN VOLTAGE (V)
TEMPERATURE (°C)
25
1.0
50
LT1935
75
1.5
100
1935 G06
1935 G03
3
1935f
125
2.0