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Dual LDO Voltage Regulator with “GreenOperation”

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GENERAL DESCRIPTION

The XC6416 series is a high accurate, low noise, high ripple rejection, and low dropout CMOS Dual regulator with

GreenOperation function. The series includes a reference voltage source, an error amplifier, a current limiter, and a phase

compensation circuit.

GreenOperation function provides high speed operation, low power consumption and high efficiencies by automatically

switching between a high speed mode (HS) and a power save mode (PS) depending on the load current level. The

switching point of the GreenOperation to the output current is being fixed inside the IC, thus providing operating conditions

with the most suitable level of supply current for the application. The USP-6C package has GO pin. If a high level singal is

input to the GO pin, the XC6416 can be used as a high speed fixed mode regulator.

The EN function turns each output of the two regulators independently. In this state, the electric charge at the output

selectable in 0.05V increments within a range of 0.8V ~4.0V, using laser trimming technologies. The series includes a

fold-back circuit, which aids the operation of the current limiter and circuit protection.

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APPLICATIONS

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Mobile phones

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Cordless phones, wireless communication equipment

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Portable games

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Cameras, video recorders

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Portable audio equipment

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PDAs

■TYPICAL APPLICATION CIRCUITS

JTR0333-006

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FEATURES

Maximum Output Current

: 200mA (300mA limit, TYP.)

Dropout Voltage

Operating Voltage Range

: 1.5V~6.0V

Output Voltage Range

: 0.8V~4.0V (0.05V increments)

High Output Accuracy

: ±1% <XC6416A/B/C/D in HS Mode>

±2% <XC6416E/F/G/H in HS Mode>

±3% <XC6416A~H in PS Mode>

Low Power Consumption

: 5μA/ch @ PS mode (TYP.)

28μA/ch @ HS mode (TYP.)

Stand-by Current

: Less than 0.1μA

Ripple Rejection Rate

: 60dB @ 1kHz

Low ESR Capacitor

: 1.0μF Ceramic Capacitor Compatible

Small Packages

: USP-6C, SOT-26

☆GreenOperation Compatible

■TYPICAL PERFORMANCE

CHARACTERISTICS

●負荷過渡応答

tr=5μs

2.3

2.4

2.5

2.6

2.7

2.8

2.9

Time （10μs/div）

0

50

100

150

200

250

300

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Load Transient Response