Holtek Semiconductor HT74153
The HT74153 is a high efficiency synchronous step-down converter capable of delivering 2A output current. It can operate over a wide input voltage range from 2.5V to 6.0V and integrates 100mΩ low on-resistance main and rectified switches to minimize the conduction losses. The automatically PWM/PFM mode switching is useful to drive up to 2A load current and also decrease its standby current in no load condition.| Part No. | HT74153 |
|---|---|
| Datasheet | HT74153 Download |
| Manufacturer |  Holtek Semiconductor |
| Description | 6.0V 2.0A 1.2MHz Synchronous Step-Down Converter |
| Buy | Stock & Price |
FEATURES
● Wide input range of VIN from 2.5V to 6.0V● Output voltage range from 0.6V to VDD
● Internal low on-resistance switches ♦ High-Side RDS(ON) 100mΩ ♦ Low-Side RDS(ON) 100mΩ
● 100% duty cycle operation
● Switching frequency: 1.2MHz
● PFM mode operation when no load/light load conditions
● Output voltage power good indicator when VOUT=0.95×VOUT(TARGET) (8SOP-EP)
● Low IC surface temperature in short circuit protection
● Protection features ♦ VDD under voltage lock-out ♦ Cycle-by-Cycle over current protection ♦ Thermal shutdown protection ♦ Output short-circuit protection ♦ Output over-voltage protection
● Package types: 8-pin SOP-EP and 5-pin SOT23
APPLICATIONS
● Single Li-Battery applications and small motor driver applications● Rechargeable AA batteries
● Laser demarcation device
● Portable toy
● 5V USB/Adaptor power source
● 3.3V DC source
GENERAL DESCRIPTION
Up to 1.2MHz switching frequency in PWM allows to use the small surface mount inductors and capacitors in applications.
