R1191L

Part: R1191x Series

Type: Low Dropout (LDO) Voltage Regulator

Description: 300 mA LDO regulator operating up to 16 V with mode switching between fast and low power modes, integrated reverse current protection, and 6.0 μA low-power quiescent current.

Operating Conditions:

• Supply voltage: 3.5 V to 16.0 V (3.5 V to 14.0 V for 2.0 V ≤ VOUT < 3.0 V)
• Operating temperature: -40 to +85 °C
• Output voltage range: 2.0 V to 15.0 V (0.1 V steps)

Absolute Maximum Ratings:

• Max supply voltage: 18.0 V
• Max continuous current: 400 mA
• Max junction/storage temperature: -55 to +125 °C (Storage Temperature)

Key Specs:

• Output current: Min. 300 mA
• Supply current (Fast Mode): Typ. 50 μA, Max. 100 μA (VECO = VIN, IOUT = 0 mA)
• Supply current (Low Power Mode): Typ. 6 μA, Max. 15 μA (VECO = GND, IOUT = 0 mA)
• Standby current: Typ. 0.3 μA, Max. 1.0 μA (VIN = 16 V, VCE = 0 V)
• Reverse current: Typ. 0 μA, Max. 0.1 μA (VOUT > 0.6 V, 0 V ≤ VIN ≤ 16 V)
• Dropout voltage (5.0 V ≤ VOUT < 12.0 V, IOUT = 300 mA): Typ. 0.55 V, Max. 0.75 V (ECO = "H"); Typ. 0.7 V, Max. 1.0 V (ECO = "L")
• Ripple rejection: Typ. 60 dB (f = 1 kHz, IOUT = 30 mA, 5.0 V ≤ VOUT < 12 V)
• Short current limit: Typ. 50 mA (VOUT = 0 V)

Features:

• Reverse current protection to VDD pin
• ECO pin mode selection (Fast Mode / Low Power Mode)
• Built-in fold-back protection and short current limit circuit
• Built-in thermal shutdown circuit (150 °C trip, 130 °C release)
• Optional auto-discharge function at off state (D version)
• Ceramic capacitor compatible (CIN ≥ 2.2 μF, COUT ≥ 4.7 μF)

Applications:

• Power source for digital home appliances
• Power source for audio visual equipment
• Battery back-up circuits

Package:

• DFN1616-6
• SOT-23-5
• SOT-89-5

• Ceramic capacitors are recommended to be used with this IC ··· CIN = 2.2 μ F or more, COUT = 4.7 μ F or more

• Power source for digital home appliances
• Power source for audio visual equipment

All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions.

All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions.

There is the built-in thermal-shutdown function in R1191x series. It discontinues operation of the IC when the junction temperature becomes over 150 ° C (Typ.) and IC re-operates when the junction temperature under 130 ° C (Typ.). If the temperature increasing keeps the IC repeats ON and OFF operating. The output becomes the pulse condition.