rt9903 Richtek Technology Corporation, rt9903 Datasheet - Page 11

• Manufacturer Part Number: rt9903
• Description: Channel Dc/dc Converters With High-efficiency Step-up
• Manufacturer: Richtek Technology Corporation

DS9903-07 August 2007
V
V
V
BAT
BAT
BAT
CH4 Load
= 3V, V
= 3V, V
= 4.2V, V
V
V
DD
DD
CX
CX
DD
= 3.3V, @I
= 3.3V
Time (2.5us/Div)
Time (2.5us/Div)
Time (1ms/Div)
& Output Ripple
& Output Ripple
= 3.3V
Transient Response
OUT
= 100mA to 350mA
Preliminary
2500
2000
1500
1000
500
0
0
V
V
BAT
BAT
= 2.5V, V
= 3.8V, V
50
Frequency vs. R
V
V
CX
CX
100
DD
DD
Time (2.5us/Div)
Time (2.5us/Div)
& Output Ripple
& Output Ripple
= 3.3V
= 3.3V
R
RT
150
(kΩ)
RT
RT9903
Resistor
200
www.richtek.com
250
11
300