AP131-31W

AP131 300mA Low Dropout Linear Regulator with Shutdown Features - Input voltage range is up to 7V - Dropout voltage 400mV at 300mA output current - Guaranteed 300mA output current. - Internal Ron =1.5Ω PMOS draws no base current - Low quiescent current 50µA - Output voltage 2% accuracy, and 1.5V to 5V with 0.1V step - Active low shutdown function (EN pin). - Fast transient response - Good load regulation - Current limit and thermal shutdown protection - SOT89-5L and SOT23-5L packages General Descriptions The AP131 is a 300mA, fixed output voltage, low dropout linear regulator. The Device included pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. The device is ON when EN pin is set to logic high level. The characteristics of low dropout voltage and less quiescent current make it good for some critical current application, for example, some battery powered devices. The typical quiescent current is approximately 50µA from zero to maximum load. Due to internal flexible design, result in extensively fixed output voltage versions and make it convenient to use for applications. Built-in current-limit and thermal-shutdown functions prevent any fault condition from IC damage. An external capacitor can be connected to the BP pin and reduce the output noise. Applications - Wireless Communication - Battery Powered device - CD-ROM, DVD, and LAN Card - PC peripheral Pin Assignments (Top View) EN GND IN 1 2 3 4 OUT 5 BP Pin Descriptions Name IN GND EN BP OUT Description Input voltage Ground Enable pin Bandgap Output voltage SOT89-5L (Top View) IN GND EN 1 2 3 4 BP 5 OUT SOT23-5L This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 1.2 Oct 28, 2004 1/7 AP131 300mA Low Dropout Linear Regulator with Shutdown Ordering Information AP131 XX X X X Output voltage 15: 1.5V 25: 2.5V 50: 5.0V ~ ~ Package Y : SOT89-5L W: SOT23-5L Lead Free Blank : Normal L : Lead Free Package Packing Blank:Tube A : Taping Block Diagram IN Error Amp OUT Current Limit EN Enable - + Bandgap 1.08V Thermal Shutdown BP GND Absolute Maximum Ratings Symbol VCC TOP TST PD Parameter Input voltage Operating junction temperature range Storage temperature range Power dissipation, PD @TA=25ºC SOT89-5L SOT23-5L Package thermal resistance SOT89-5L SOT23-5L Rating -0.1 to +7 -40 to +125 -65 to +150 +0.5 +0.25 +100 +250 Unit V ºC ºC W W ºC/W ºC/W ΘJA Anachip Corp. www.anachip.com.tw 2/7 Rev. 1.2 Oct 28, 2004 AP131 300mA Low Dropout Linear Regulator with Shutdown Electrical Characteristics TA=25ºC, CIN=1µF, COUT=10µF, unless otherwise specified. Symbol VDROP ILIMIT ∆VLINE ∆VLOAD ∆VOUT Parameter Dropout voltage (Note 1) Current Limit (Note 2) Line regulation Load regulation (Note 3) Output voltage accuracy Output voltage temperature coefficient (Note 4) Ripple Rejection Standby current Quiescent current Enable pin current Enable pin voltage Enable delay time Conditions IL=300mA VIN=5V, VOUT=0V IL=1mA, VIN=5~7V IL=1~300mA, VIN=5V IL=1mA, VIN=5V Min. 350 -2 - Typ. 400 450 0.1 30 50 60 50 8 Max. 500 0.3 35 +2 150 5 100 < 0.1 VIN 0.8 - Unit mV mA %/V mV % PPM/ºC dB µA µA µA V V µS PSRR ISB IQ IEN VENON VENOFF TDELAY F=100Hz, CIN=1µF, CO=10uF, IL=100mA IL=0mA, VIN=5V, EN=0V IL=0mA, VIN=5V, EN=5V Output ON Output OFF CBP=0.1µF, COUT=1µF, IOUT=30mA 1.5 0 - Note 1. Dropout voltage is defined as the input to output differential voltage. Dropout is measured at constant junction temperature by using pulsed ON time, and the criterion is VOUT inside target value ±2%. This test is skipped at the condition of VIN