RT9903BGQV RICHTEK [Richtek Technology Corporation], RT9903BGQV Datasheet - Page 9

• Manufacturer Part Number: RT9903BGQV
• Description: 4 Channel DC/DC Converters IC with High-Efficiency Step-Up
• Manufacturer: RICHTEK [Richtek Technology Corporation]

DS9903B-07 August 2007
V
V
V
BAT
BAT
BAT
= 3V, V
= 2V, V
= 4.2V, V
V
V
V
DD
DD
LX3
LX4
LX3
DD
= 3.3V, @I
= 3.3V, @I
Time (1us/Div)
= 3.3V, @I
Time (1us/Div)
Time (1us/Div)
&
&
&
Output Ripple
Output Ripple
Output Ripple
OUT
OUT
OUT
= 20mA
= 100mA
= 20mA
Preliminary
100
95
90
85
80
1
V
V
V
OUT
BAT
BAT
CH4 Efficiency vs. Output Current
= 3.3V
= 2V, V
= 3.8V, V
V
V
DD
LX4
LX3
DD
Output Current (mA)
= 3.3V, @I
10
= 3.3V, @I
V
Time (1us/Div)
V
Time (1us/Div)
&
&
IN
IN
= 2V
Output Ripple
Output Ripple
= 3V
OUT
RT9903B
OUT
= 350mA
V
= 20mA
100
www.richtek.com
IN
= 2.5V
1000
9