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Home > Step Down Switching Regulators
UD06123 Datasheet
 2.25MHz, 1.2A, VFB=0.6V SYNCHRONOUS STEP-DOWN CONVERTER

 

 

 

DESCRIPTION

                

UTC UD06123 is a 1.4MHz constant  frequency current mode

PWM step-down converter. It is ideal for portable equipment

requiring very high current up to 1.8A from single-cell Lithium-ion

batteries while still achieving over 90% efficiency during peak load

conditions. The 2.5V to 7.5V input voltage range makes UTC

UD06123 ideally suited for single Li-Ion, two to four AA

battery-powered applications. 100% duty cycle provides low

dropout operation, extending battery life in portable systems. Pulse

skipping mode operation provides very low output ripple voltage for

noise sensitive applications. Switching frequency is internally set at

2.25MHz, allowing the use of small surface mount inductors and

capacitors.   The internal synchronous switch increases efficiency

and decreases need of an external Schottky diode. Low output

voltages are easily supported with the 0.6V feedback reference

voltage.

 

FEATURES

 

* Input Voltage Range :2.5V~7.5V

* Output Voltage: from 0.6V to VIN

* High Efficiency: Up to 92%

* Constant Frequency Operation:2.3MHz

* Output Current:1.2A

* Quiescent Current: 50uA (input < 4.2V)

* No Schottky Diode Required

* 100% Duty Cycle in Dropout

* 0.6V Reference Allows Low Output Voltages

* Current Mode Operation for Excellent Line and Load Transient Response

* Current limit, Enable function

* Short Circuit Protect (SCP)

* 1µA Shutdown Current 

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