MAX8627 Maxim Integrated Products, MAX8627 Datasheet - Page 5

• Manufacturer Part Number: MAX8627
• Description: Synchronous Boost Converter
• Manufacturer: Maxim Integrated Products

(Circuit of
Figure
V
V
I
POUT
POUT
LOAD
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
V
0
LX
I
1, V
LI
0.5
HEAVY LOAD SWITCHING WAVEFORMS
SOFT-START TIME vs. INPUT VOLTAGE
Low V
OUTS
_______________________________________________________________________________________
LOAD TRANSIENT RESPONSE
1.5
= V
INPUT VOLTAGE (V)
POUT
Boost Converter with True Shutdown
2.5
20μs/div
1μs/div
= 5V, V
BATT
3.5
ON
4.5
MAX8627 toc12
MAX8627 toc14
= V
BATT
Typical Operating Characteristics (continued)
5.5
, 20µA IQ, 1MHz Synchronous
100mV/div
(AC-COUPLED)
2V/div
0
1A/div
0
100mV/div
(AC-COUPLED)
500mA/div
0
= 3.6V, T
A
= +25°C, unless otherwise noted.)
V
V
V
POUT
POUT
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
BATT
V
0
LX
I
LI
0.45
LIGHT-LOAD SWITCHING WAVEFORMS
PEAK INDUCTOR CURRENT vs. V
LINE TRANSIENT RESPONSE
0.65
100μs/div
V
40μs/div
ILIM
0.85
(V)
1.05
MAX8627 toc13
MAX8627 toc15
ILIM
1.25
100mV/div
(AC-COUPLED)
2V/div
0
1A/div
0
2V/div
0
100mV/div
(AC-COUPLED)
5