ltc3440 Linear Technology Corporation, ltc3440 Datasheet - Page 5

• Manufacturer Part Number: ltc3440
• Description: Micropower Synchronous Buck-boost Dc/dc Converter
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
75
90
70
60
90
85
80
70
80
–55
–55
Boost Max Duty Cycle
Feedback Voltage Line Regulation
V
R
V
IN
IN
T
= 60k
= V
= V
–25
–25
OUT
OUT
= 3.6V
= 2.5V TO 5.5V
TEMPERATURE (°C)
TEMPERATURE (°C)
5
5
35
35
65
65
W
95
95
3440 G19
3440 G16
U
125
125
2.40
2.30
2.25
2.35
370
430
410
390
350
–55
–55
Minimum Start Voltage
Error Amp Sink Current
V
IN
= V
–25
–25
OUT
= 3.6V
TEMPERATURE (°C)
TEMPERATURE (°C)
5
5
35
35
65
65
95
95
3440 G20
3440 G17
125
125
2500
1500
1000
3000
2000
0.30
0.25
0.20
0.15
0.10
–55
–55
Current Limit
PMOS R
V
SWITCHES A AND D
IN
= V
–25
–25
PEAK SWITCH
OUT
DS(ON)
= 3.6V
TEMPERATURE (°C)
TEMPERATURE (°C)
5
5
AVERAGE INPUT
35
35
LTC3440
V
IN
65
65
= V
OUT
95
95
= 3.6V
3440 G21
3440 G18
3440fb
5
125
125