BD7672BG
BD7672BG is DC/DC Converter manufactured by ROHM.
PWM Control Type
DC/DC Converter IC for AC/DC Driver
- General Description
BD7672BG is a PWM controller typed DC/DC converter for AC/DC that provides an optimum system for all products that requires an electrical outlet. This product supports both isolated and non-isolated devices. IC enables simple design of low-power converters. With switching MOSFET and current detection resistor as external devices, it enables more freedom in design. Since the peak current control is utilized, peak current is controlled in each cycle, application excels wide bandwidth and transient response. BD7672BG includes various protective functions such as soft start function, burst function, per-cycle over current limiter, VCC overvoltage protection and overload protection. An external latch pin (P pin) is provided, so that latch stopping (OFF) can be set by external signals. This function is available as overheating protection and over output voltage protection. The PWM switching frequency is fixed at 65 k Hz. A frequency hopping function is included which contributes to low EMI.
- Key Specifications
- Power Supply Voltage range:
8.5V to 25.0V
- Operating Current:
Normal: 0.60m A (Typ)
Burst: 0.40m A (Typ)
- Oscillation Frequency:
65k Hz (Typ)
- Operating Temperature range:
-40°C to +105°C
- Package SSOP6
W(Typ) x D (Typ) x H (Max) 2.90mm x 2.80mm x1.25mm
- Features
- PWM frequency of 65k Hz
- PWM current mode method
- Low circuit current when UVLO is ON (12μA at VCC=12V)
- Low circuit current in no load (Burst operation when load is light)
- Built-in SW frequency hopping function
- 250nsec leading-edge blanking
- VCC UVLO / OVP
- Per-cycle over current protection circuit
- Soft start
- Output overload protection (Self-restart protection)
- External latch function for P pin
(Over heating protection function)
- Typical Application...
