RT9953 RICHTEK [Richtek Technology Corporation], RT9953 Datasheet - Page 13

• Manufacturer Part Number: RT9953
• Description: 4+1 CH Power Management IC
• Manufacturer: RICHTEK [Richtek Technology Corporation]

(200mA/Div)
V
(100mV/Div)
(50mV/Div)
(100mV/Div)
(200mA/Div)
V
(200mA/Div)
V
OUT_CH4_ac
DS9953-02 April 2011
OUT_CH1_ac
OUT_CH2_ac
I
LOAD
I
I
LOAD
LOAD
CH2 Step-Up Load Transient Response
V
I
V
I
OUT
OUT
DDM
DDM
V
I
CH1 Load Transient Response
CH4 Load Transient Response
OUT
DDM
= 100mA to 400mA, L1 = 2.2μH, C2 = 10μFx2
= 100mA to 400mA, L2 = 2.2μH, C5 = 10μFx2
= 5V, V
= 3V, V
= 50mA to 300mA, L4 = 4.7μH, C11 = 10μF
= 5V, V
BAT
BAT
Time (1ms/Div)
Time (1ms/Div)
Time (1ms/Div)
BAT
= 3V, V
= 1.8V, V
= 3.7V, V
OUT_CH1
OUT_CH2
OUT_CH4
= 5V,
= 3.3V,
= 3.3V,
(200mA/Div)
V
V
(200mA/Div)
(50mV/Div)
(50mV/Div)
OUT_CH3_ac
OUT_CH2_ac
I
I
LOAD
LOAD
1050
1030
1010
990
970
950
930
910
890
870
850
CH2 Step-Down Load Transient Response
-40 -30 -20 -10 0
V
I
CH3 Load Transient Response
OUT
V
I
DDM
OUT
DDM
Frequency vs. Temperature
= 100mA to 400mA, L2 = 2.2μH, C5 = 10μF
= 50mA to 300mA, L3 = 4.7μH, C8 = 10μF
= 5V, V
= 5V, V
Temperature (°C)
Time (1ms/Div)
Time (1ms/Div)
BAT
BAT
10 20 30 40 50 60 70 80 90
= 3.7V, V
= 3.7V, V
V
OUT_CH2
DDM
OUT_CH3
RT9953
www.richtek.com
= 3V, V
= 1.2V,
= 1.8V,
BAT
= 3V
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