BD8301MUV Datasheet | ROHM

Description ROHM’s highly-efficient step-up/down switching regulator BD8301MUV produces step-up/down output including 3.3 V from 1 cell of lithium battery with just one coil. This IC adopts an original step-up/down drive system and creates a higher efficient power supply than conventional Sepic-system or H-bridge system switching regulators. - Features 1) Highly-efficient step-up/down DC/DC converter to be constructed just with one inductor. 2) Input voltage 2.5 V - 5.5 V 3) Output current 1 A at 3.3 V 800 m A at 5.0 V 4) Incorporates soft-start function. 5) Incorporates timer latch system short protecting function. 6) High heat radiation surface mounted package VQFN020V4040 - Application General portable equipment like portable audio or DSC/DVC - Absolute Maximum Ratings Parameter Maximum applied power voltage Maximum input current Maximum input voltage Power dissipation Operating temperature range Storage temperature range Junction temperature - 1 Symbol Vcc,PVCC Iinmax Lx1 Lx2 Pd Topr Tstg Tjmax Ratings 7.0 2.0 7.0 7.0 700 -25 to +85 -55 to +150 150 Unit V A V V m W ºC ºC ºC When installed on a 70.0 mm × 70.0 mm × 1.6 mm glass epoxy board. The rating is reduced by 5.6 m W/°C at Ta = 25°C or more. - Operating Conditions (Ta = 25°C) Parameter Power supply voltage Output voltage Symbol Vcc OUT Voltage range 2.5 to 5.5 2.8 to 5.2 Unit V V .rohm. c 2009 ROHM Co., Ltd. All rights reserved. ○ 1/13 - Rev.C - Electrical Characteristics (Unless otherwise specified, Ta = 25 °C, VCC = 3.7 V) Parameter Symbol Target Value Min 50 0.8 0.790 -50 0.6 10 0.7 77 -1 -1 1.5 -0.3 250 Typ 2.25 100 1.0 0.800 0 1.00 20 1.5 85 120 100 120 100 0 0 400 500 10 Max 2.45 150 1.2 0.810 50 1.4 30 3.0 100 93 200 160 200 160 1 1 5.5 0.3 700 1 1 1 750 20 Unit Technical Note .. Conditions [Low voltage input malfunction preventing circuit] Detection threshold voltage Hysteresis range [Oscillator] Oscillation frequency [Error AMP] INV threshold voltage Input bias current...