MAX8896 datasheet(7/17 Pages) MAXIM

Part #	MAX8896

Description	Dual PWM Step-Down Converter in a 2mm x 2mm Package for WCDMA PA and RF Power

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Manufacturer	MAXIM [Maxim Integrated Products]

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Dual PWM Step-Down Converter in a 2mm x

2mm Package for WCDMA PA and RF Power

_______________________________________________________________________________________

7

10

µs/div

OUT1 LOAD TRANSIENT RESPONSE

IOUT

200mA/div

100mV/div

(AC-COUPLED)

MAX8896 toc16

VPA

500mA

0mA

10

µs/div

OUT1 REFIN TRANSIENT RESPONSE

VREFIN

500mV/div

1A/div

MAX8896 toc17

VPA

IL1

0.72V

0.2V

1.8V

0.5V

2.5

Ω LOAD

10

µs/div

OUT1 REFIN TRANSIENT RESPONSE

WITH BYPASS EVENT

VREFIN

1V/div

1A/div

MAX8896 toc18

VPA

IL1

3.3V

0.6V

1.8V

0

30

20

10

40

50

60

70

80

90

100

0

50

100

150

200

OUT2 EFFICIENCY

vs. LOAD CURRENT

LOAD CURRENT (mA)

VCC = 4.2V

VCC = 3.6V

VCC = 3.2V

20

µs/div

OUT1 LINE TRANSIENT RESPONSE

VIN

500mV/div

10mV/div

(AC-COUPLED)

200mA/div

MAX8896 toc15

VPA

IL1

50mA LOAD

4.0V

3.5V

Typical Operating Characteristics (continued)

(VCC = VIN1 = VIN2 = 3.6V, VREFIN = 0.72V, circuit of Figure 3, TA = +25°C, unless otherwise noted.)

3.04

3.05

3.06

3.07

3.08

3.09

3.10

3.11

3.12

0

50

100

150

200

*OUT2 IN DROPOUT

OUT2 VOLTAGE

vs. LOAD CURRENT

LOAD CURRENT (mA)

VCC = 3.6V

VCC = 3.2V*

VCC = 4.2V

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