RT9511 Datasheet, PDF (13/24 Pages) Richtek Technology Corporation – Fully Integrated Battery Charger with Two Step-Down Converters

RT9511
Frequency vs. Input Voltage
1.60
1.55
1.50
1.45
1.40
1.35
1.30
1.25
1.20
VIN = 3.6V, VOUT = 1.2V, IOUT = 300mA
2.5 2.8 3.1 3.4 3.7 4 4.3 4.6 4.9 5.2 5.5
Input Voltage (V)
1.60
1.55
1.50
1.45
1.40
1.35
1.30
1.25
1.20
-40
Frequency vs. Temperature
VIN = 3.6V, VOUT = 1.2V, IOUT = 300mA
-15 10 35 60 85 110 135
Temperature (°C)
Current Limit vs. Input Voltage
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
VOUT = 1.2V
1.2
2.5 2.8 3.1 3.4 3.7 4 4.3 4.6 4.9 5.2 5.5
Input Voltage (V)
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
-40
Current Limit vs. Temperature
VIN = 5V
VIN = 3.6V
VIN = 3.3V
VOUT = 1.2V
-15 10 35 60 85 110 135
Temperature (°C)
Output Ripple Voltage
VIN = 3.6V, VOUT = 1.2V, IOUT = 1A
VOUT
(10mV/Div)
Output Ripple Voltage
VIN = 5V, VOUT = 1.2V, IOUT = 1A
VOUT
(10mV/Div)
VLX
(5V/Div)
Time (500ns/Div)
DS9511-01 April 2011
VLX
(5V/Div)
Time (500ns/Div)
www.richtek.com
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