LTC3532 LINER [Linear Technology], LTC3532 Datasheet - Page 4

• Manufacturer Part Number: LTC3532
• Description: Micropower Synchronous Buck-Boost DC/DC Converter
• Manufacturer: LINER [Linear Technology]

200mV/DIV
BURST PIN
LTC3532
TYPICAL PERFOR A CE CHARACTERISTICS
4
2V/DIV
1200
1150
1100
1050
1000
V
100
950
900
850
800
OUT
96
94
92
88
80
98
90
86
84
82
–55
500
Burst Mode to Fixed Frequency
Transition
C
V
V
Effi ciency vs Frequency
Frequency vs Temperature
V
V
V
OUT
IN
OUT
IN
IN
OUT
= 3.6V
= 3.6V
= 3.6V
= 22μF
= 3.3V
= 3.3V
–5
1000
TEMPERATURE (°C)
FREQUENCY (kHz)
400μs/DIV
45
1500
W
95
3532 G04
3532 G07
3532 G10
U
2000
2V/DIV
2V/DIV
1.221
1.216
1.206
1.241
1.236
1.231
1.226
1.211
1.196
1.201
SW1
SW2
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–55
2.4
Switch Pins in Buck-Boost Mode
V
V
I
Peak Current Clamp and Limit
vs V
Feedback Voltage vs Temperature
V
LOAD
IN
OUT
OUT
= 3.3V
= 3.3V
IN
= 100mA
= 3.3V
–5
TEMPERATURE (°C)
3.4
40ns/DIV
V
IN
(V)
45
4.4
I
I
CLAMP
LIMIT
95
T
3532 G08
3532 G05
3532 G11
A
= 25°C, unless otherwise specifi ed.
5.4
200mV/DIV
100mA/DIV
2V/DIV
2V/DIV
I
V
LOAD
SW1
SW2
OUT
70
60
50
40
30
20
10
150
Automatic Burst Threshold
vs R
Load Transient Response in
Fixed Frequency Mode
Switch Pins Before Entering
Boost Mode
V
V
I
C
V
V
V
V
LOAD
IN
OUT
OUT
IN
OUT
OUT
IN
= 3.6V
= 2.9V
= 3.6V
= 10μF
= 3.3V
= 3.3V
BURST
= 3.3V
= 100mA
250
BURST RESISTOR (kΩ)
100μs/DIV
40ns/DIV
350
ENTER BURST
LEAVE BURST
450
3532 G06
3532 G12
3535 G09
3532fc
550