REJ03F0231-0100

Features:

• Maximum ratings
   - Power-supply voltage Vcc: 24 V
   - Operating junction temperature Tjopr: 40 to 125°C
• Electrical characteristics
   - VREF output voltage VREF: 5.0 V ± 3%
   - UVLO operation start voltage VH: 10.5 ± 0.9 V
   - UVLO operation stop voltage VL: 9.0 ± 0.7 V
   - PFC output maximum ON duty Dmax-out: 95% (typ.)
• Functions
   - Constant power limit function
   - Continuous conduction mode
   - Hold function of PFC operation on momentary outage (PFC hold function)
   - Overvoltage detection
   - Overcurrent detection
   - Soft start
   - Feedback loop disconnection detection
   - IC shutdown function
   - Package lineup: SOP-16 and DILP-16


Application

• Flat panel display
• Projector
• Desktop PC
• White goods


Pinout




Specifications

Item	Symbol	Ratings	Unit							Units
Supply voltage	VCC	24	V
OUT peak current	Ipk-out	±1.0	A							3
OUT DC current	Idc-out	±0.1	A
Terminal voltage	Vi-group1	0.3 to Vcc	V							4
	Vi-group2	0.3 to Vref	V							5
CAO voltage	Vcao	0.3 to Vcaoh	V
EO voltage	Veo	0.3 to Veoh	V
DELAY voltage	Vdelay	0.3 to +6.5	V
CAI voltage	Vi-cs	1.5 to +0.3	V
RT current	Irt	200	A
OIAC current	Iiac	0.6	mA
VREF current	Io-ref	5	mA
Power dissipation	Pt	1	W							6
Operating junction temperature	Tj-opr	40 to +125
Storage temperature	Tstg	55 to +150

Notes: 1. Rated voltages are with reference to the GND pin.
           2. For rated currents, inflow to the IC is indicated by (+), and outflow by ().
           3. The transient current when driving capacitive load.
          4. This is the rated voltage for the following pin: OUT.
          5. This is the rated voltage for the following pins: CGND, VREF, CLIMIT, RT, CT, PFC-ON, IAC, FB, SS
          6. Thermal resistance of packages


Description

The R2A20111 is a power-factor correction (PFC) controller IC.

This IC adopts continuous conduction mode as PFC operation.

Various functions such as constant power limit, overvoltage detection, overcurrent detection, soft start, feedback loop disconnection detection, and holding function of PFC operation through momentary outage (PFC hold function) are incorporated in a single chip. These functions reduce external circuitry.

The constant power limit function allows to eliminate a significant amount of coil noise of REJ03F0231-0100 which is generated due to overcurrent detection operation in case of conventional overload.

The PFC REJ03F0231-0100 hold function enables quick recovery by continuing PFC operation after momentary outage. The hold time can be adjusted by an external capacitance.

Overcurrent detection pin  of REJ03F0231-0100  is separately provided.

Latch mode shutdown function is incorporated.

A soft-start control pin of REJ03F0231-0100 provides for the easy adjustment of soft-start operation, and can be used to prevent overshooting of the output voltage.