High quality PWM/VFM Step-Down DC/DC Controller(PT1101)

1)PWM/VFM Step-Down DC/DC Controller 2)crazy price 3)professional staff 4)perfect after-sale service 5)desered reputation

1. Article: IC DC-DC converts IC PT1101

2. Description:

Article	IC DC-DC convert IC PT1102
Model NO.	PT1101
Batch NO.	09+
Package	SOT-23-5
Marketing mode	Sport goods
Character of product	Hot cake
Dispose signal	Imitate signal
Workmanship	Semiconductor integrated
Electric conduction type	Bipolar
Integration	Medium scope
Operating temperature	-40~125(°C)

3. PT1101 IS PWM/VFM Step-Down DC/DC Controller 

4. GENERAL DESCRIPTION:

 The PT1101 Series are CMOS-based PWM step-down DC/DC Controllers with low supply current. A low ripple, high efficiency step-down DC/DC converter can be easily composed of with additional several external components such as a power-transistor, an inductor, a diode and capacitors. Output voltage is fixed or can be adjusted with external resisters. (PWM/VFM alternative circuit is disabled in adjustable types)

The PT1101 Series consist of a PWM control circuit, a high precision band-gap voltage reference, a soft-start circuit, a protection circuit, a PWM/VFM alternative circuit, an oscillator, an error amplifier with internal compensation network and input/output voltage detection circuits.

With its internal state-of-art control algorithm, the PT1101 Series based DC/DC converter can achieve high performance while maintaining stability. For example, with its PWM/VFM alternative circuit, when the load current is small, the operation is automatically switched into the VFM mode to improve the efficiency. Further, if the term of maximum duty cycle keeps on a certain time, the embedded protection circuits restart the operation with soft-start and repeat until the maximum duty cycle condition is released. Finally, built-in UVLO function blocks potentially unstable output when the input voltage is equal or less than UVLO threshold and makes this IC standby for low power consumption. 

5. FEATURES:

(1)   Wide range of input Voltage: 2.5V~18V

(2)    Built-in soft-start and protection function.

(3)    High efficiency: typ. 90%

(4)    Oscillation frequency: 500 KHz

(5)   Low Temperature Coefficient of output Voltage: typ. ±100ppm/°C

(6)   Standby Current: typical 0.1µA

(7)   Output Voltage:

   -- Setting with a step of 0.1V in the range of 1.2V to 6.0V as fixed Voltage type.   

  --Reference Voltage of Adjust type is 1.0V.

(8)   Small package: SOT-23-5

(9)   CMOS Output Capability

6. APPLICTION:

(1)   Hand-held communication equipment, cameras, video instruments such as VCRs camcorders

(2)   Battery-powered equipment

(3)   Household electrical appliances

7. Main market:

(1) North America

(2) South America

(3) Easter Asia

(4) Western Europe

8. Delivery:

10~15 working days after payment

High quality PWM/VFM Step-Down DC/DC Controller(PT1101)