RT9971 datasheet(14/22 Pages) RICHTEK

14 / 22 page

DS9971-01 April 2011

www.richtek.com

RT9971

CH2 Step-Up Output Voltage vs. Output Current

5.02

5.03

5.04

5.05

5.06

5.07

100

200

300

400

500

600

Output Current (mA)

CH3 Step-Down Output Voltage vs. Output Current

2.490

2.495

2.500

2.505

2.510

2.515

2.520

100

200

300

400

500

600

Output Current (mA)

CH4 Step-Down Output Voltage vs. Output Current

0.995

0.997

0.999

1.001

1.003

1.005

1.007

1.009

1.011

1.013

1.015

100

200

300

400

500

600

Output Current (mA)

CH5 Step-Up Output Voltage vs. Output Current

15.7

15.8

15.9

16.0

16.1

16.2

16.3

020

100

Output Current (mA)

CH6 Inverting Output Voltage vs. Output Current

-8.3

-8.25

-8.2

-8.15

-8.1

-8.05

-8

020

100

Output Current (mA)

VDDM = 3V

VBAT = 3.4V

VDDM = 5V

VBAT = 4.5V

VBAT = 3V

VBAT = 1.8V

VBAT = 4.5V

VDDM = 3V

VBAT = 4.5V

VBAT = 3.4V

VBAT = 2.7V

VDDM = 5V

VBAT = 4.5V

VBAT = 3.4V

VBAT = 2.7V

VDDM = 5V

Power On

Time (5ms/Div)

VOUT_CH1

(5V/Div)

VOUT_CH2

(5V/Div)

VOUT_CH3

(2V/Div)

VOUT_CH4

(1V/Div)

VDDM = 5V, VBAT = 3.7V, SEL = Low

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