# LR1122D CMOS IC - Low Noise 200mA LDO Regulator

## DESCRIPTION
️· LDO (Linear Regulator) with high output voltage accuracy, low supply current, low ON-resistance, and high ripple rejection.
️· Very low dropout voltage and good line/load transient response.
️· Suitable for portable communication equipment, cameras, VCRs, camcorders, and battery-powered devices.

## FEATURES
️· Ultra Supply Current: 20µA (Typ.)
️· Standby Mode: 0.1µA (Typ.)
️· Very Low Dropout Voltage: 0.13V (Typ.) @ Iout = 150mA, Vout = 2.85V
️· Ripple Rejection: 75dB (Typ.) @ f=1kHz, Vout=2.85V
️· Temperature-Drift Coefficient: ±30ppm/°C (Typ.)
️· Line Regulation: 0.02%/V (Typ.)
️· Output Voltage Accuracy: ±1.0% (Typ.)
️· Internal Fold Back Protection Circuit: 40mA (Typ.)
️· Recommended Capacitors: CIN=COUT=1µF or more (Ceramic)

## ORDERING INFORMATION
️· LR1122DG-xx-AE5-R: SOT-23-5 package, Tape Reel
️· LR1122DG-xx-AF5-R: SOT-25 package, Tape Reel
️· LR1122DG-xx-AB3-C-R: SOT-89 package, Tape Reel
- `xx` indicates Output Voltage (refer to Marking Information).

## MARKING INFORMATION
️· SOT-89: 12 (1.2V), 15 (1.5V), 16 (1.6V), 18 (1.8V), 20 (2.0V), 22 (2.2V), 25 (2.5V), 2J (2.85V), 30 (3.0V), 33 (3.3V), 50 (5.0V)
️· SOT-23-5 / SOT-25: Voltage code marking.

## PIN CONFIGURATION
️· SOT-89: G, I, O (Ground, Input, Output)
️· SOT-23-5 / SOT-25: I, G, CE, NC, O (Input, Ground, Chip Enable, No Connection, Output)

## PIN DESCRIPTIONS
️· VIN: Input Pin
️· GND: Ground Pin
️· CE: Chip Enable Pin (Active High)
️· NC: No Connection
️· VOUT: Output Pin

## ABSOLUTE MAXIMUM RATINGS
️· Input Voltage (VIN): 9V
️· Input Voltage (CE Pin): 8.5V
️· Output Voltage (VOUT): -0.3 ~ VIN + 0.3V
️· Output Current (IOUT): 200mA
️· Power Dissipation (PD): 360mW (SOT-23-5/SOT-25), 530mW (SOT-89)
️· Junction Temperature (TJ): +125°C
️· Operating Temperature (TOPR): -40°C ~ +85°C
️· Storage Temperature (TSTG): -55°C ~ +125°C

## ELECTRICAL CHARACTERISTICS (TA=25°C, VIN=Set VOUT+1V, IOUT=1mA, CI=CO=1µF)
️· Output Voltage (VOUT): Within ±1.0% of set voltage.
️· Load Regulation: 20-40mV (1mA ≤ IOUT ≤ 150mA)
️· Supply Current (ISS): 20-40µA (IOUT=0A)
️· Supply Current (Standby): 0.1-2µA (VCE=0V)
️· Short Circuit Current Limit (ILIMIT): 40mA @ VOUT=0V
️· Dropout Voltage (VD): 0.13-0.30V (depending on VOUT and IOUT)