Step-Up DC-DC Converter

Part No.

Features

V_IN(Range)(V)

η(％)

I_O(mA)

I_Q(uA)

Package

UC3506

1V High Efficiency Synchronous Step-Up Converters

0.6V~5.5V

Up to 92%

1000mA

18uA

TSSOP-8

UC8383-XX

165KHz VFM Step-Up DC-DC Converters

0.8V ~ 5.5V

Up to 85%

Up to 100mA

18uA

SOT-89

* 0.8V Start-Up Voltage

* Output Voltage Accuracy ±2%

* Low Ripple and Low Noise

* High Efficiency Up to 85%

* Low Profile and Minimum External Components

UC3383-XX

* Output Voltage Range: 2.0V~7.0V in 0.1V Increments

10V

Up to 80%

Up to 400mA

8uA

SOT-25 SOT-89

* Operating (Start-up) Voltage Range: 0.9V~10V

* Highly Accurate: Set-up Voltage ±2.5%

* Maximum Oscillator Frequency (Max Fosc1): 180kHz (±15%)

* Variable Duty Ratio: 45%/75% (±5%)

* Both Switching Transistor Built-in and External Types are Available

* 5-Lead Package Offer Chip Enable or Independent VOUT Pin Option.

UC3382-XX

PWM/PFM Controlled,Step-Up DC-DC Converters and controller

0.9V~10.0V

 85%(Typ)

Up to 100mA

5uA

SOT-25 SOT-89 SOT-89-5

UC3553-XX

High Efficiency Synchronous Step-Up DC-DC Converters

1.1V~5.5V

Up to 92%

Up to 300mA

20uA

MSOP-8

(Vout=1.8V~5.5V)

LT1304

MICROPOWER DC/DC CONVERTERS WITH LOW-BATTERY DETECTOR ACTIVE IN SHUTDOWN

1.5V~6.5V

–

–

–

DIP-8 SOP-8

UC2306-XX

DC-DC Converters with Low-Battery Detector Active in Shutdown

1.5V ~ 8.0V

Up to 85%

1000mA

120uA

SOP-8 DIP-8

*In shutdown mode:10μA quiescent current.

*Low battery detector active

*Only by one resistor: peak current is programmable.

UC3555

500mA PFM Synchronous Step-Up DC-DC Converters and Controller

1.6V~4.5V

 95%(Typ)

Up to 500mA

80uA

TSSOP-8

* Low power PFM step-up DC/DC

* internal synchronous rectifier

* Low battery detection

* Current limited protection

* Current Anti-Drawback protection

UC3551-XX

450KHz ADVANCED PWM STEP-UP DC-DC CONVERTER

2.0V~6.5V

Up to 90%

Up to 300mA

17uA

SOT-26

* Low Start-up Input Voltage is as Low as 1.0V

* Efficiency up to 90%

* Zero Shutdown Mode Supply Current

* Both Internal and External Power Switches for Maximum Flexibility

UC3500-XX

150KHz Max VFM Step-Up DC-DC Converters (VO=2.5V~5V)

0.7V~7.0V

 88%(Typ)

Up to 150mA

18uA

SOT-25 SOT-23 SOT-89

* 0.8V start-up voltage

* 0.5V hold-on voltage

* Low supply current of 18μA

* High efficiency up to 88%

* Low profile and minimum external components

P2172

100kHz, 1.25A High Efficiency Switching Regulators

3.0V~60.0V

 80%(Typ)

1.25A

6mA

DIP-8 SOP-8

* Very Few External Parts Required

* Self-Protected Against Overloads

* Operates in Nearly All Switching Topologies

* Flyback-Regulated Mode Has Fully Floating Outputs

* Can Be Externally Synchronized

UU28121

1.2MHz, 1.2A HIGH VOLTAGE,BOOST CONVERTER

2.5V~5.5V

–

1.2A

250uA

SOT-25

* 2.5V~5.5V operating input voltage range

* 1.2MHz Fixed Switching Frequency

* Adjustable output voltage range up to 28V

* Internal 1.2A switching current limit

* Internal Soft-start Function

* Current limit and Thermal shutdown protection

* Under voltage Lockout

UU28141

1MHz, 1.4A BOOST FOR WHITE LED DRIVER

2.5V~5.5V

–

1.4A

400uA

SOT-26

* Drives up to 8 series White LEDs

* Wide range for PWM dimming (200Hz~200KHz)

* Over Voltage Protection (OVP)

* Internal Soft-start Function

* Current limit and Thermal shutdown protection

* Under voltage Lockout

Black: Under  De

Step-Up PWM DC-DC Controller

Part No.

Features

V_IN(Range)(V)

η(％)

I_O(mA)

I_Q(uA)

Package

UC3380

PWM/PFM Step -Up Switching Regulator Controller(VO=1.8V~5.0V)

0.9V~10.0V

86%

80mA

0.5uA

SOT-25

* 0.5uA Low Shutdown Current

* Fix Frequency PWM at 300KHZ

* Built in PWM Switching Control Circuit ,Duty Ratio is 0~78%

* Soft Start Time: 3ms

* Shutdown Function

UC3550

300KHz PWM Step-Up DC-DC Controller(VO=3.3V~5.0V)

0.9V~8.0V

88%

150mA

<200uA

SOT-25

* Output Voltage Range：1.8~6V Programmable in 0.1V with high accuracy ± 2.5%

* High Efficiency 88% (Typ.)

* Low Start-up Voltage of 0.9V Typical at IOUT = 1.0mA

* Chip Enable Pin with Pull-up Current Source

UC3552

PWM DC-DC CONVERTER WITH INTERNAL SWITCH AND SOFT-START

2.6V~5.5V

90%

1600mA

1200uA

MSOP-8 SOP-8

* 1.6A, 0.23Ω, internal switch

* High efficiency: 90%

* Adjustable frequency: 640kHz or 1.3MHz

* Low shutdown current: 0.1μA

* Programmable soft-start

Black: Under  De

DC-DC Converter(Step-Down /Step-Up)

Part No.

Features

V_IN(Range)(V)

η(％)

I_CC

I_SW(A)

Package

PD(mW)

MC3063

* MAX. 40V Input

0V~40.0V

–

7.0mA

1.5A

SOP-8

* MAX. load to 1.5A

* Output Voltage Adjustable

* Frequency Operation of 150kHz

* Precision 1.5% Reference

–

3563

High-Efficiency DC-DC Converter

3.0V~30.0V

90%

1.6mA

1.5A

DIP-8  SOP-8

* Bootstrapped driver.

* High side current sense capability.

* High efficiency (up to 90%)

* Internal ±2% reference.

* Frequency operation from 100Hz to 100KHz

1000/625mW

MC34063A

Variable Frequency DC-DC Converter Controller IC

3.0V~40.0V

88%

2.7mA

1.5A

DIP-8  SOP-8 TSSOP-8

for Step-Up or Step-Down Voltage Converter

* Short circuit current limiting.

* Low standby current.

* Frequency of operation from 100Hz to 100kHz.

* Step-up, step-down or inverting switch regulators.

1250/625mW/300mW

UC33063A

DC TO DC CONVERTER CONTROLLER

3.0V~40V

–

2.7mA

1.5A

DIP-8 SOP-8

* Short Circuit Current Limiting.

* Low Standby Current.

* Frequency of Operation from 100Hz to 100kHz.

* Step-up, Step-down or Inverting Switch Regulators.

MC33167

5A DC-DC Converter with Standby Mode

7.5V~40.0V

80%

40mA Op

5.0A

TO-252-5 TO-263-5 TO-220-5

Step-Up or Step-Down or Inverse

36uA stby