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BU9000xGWZE2 Datasheet(PDF) 4 Page - Rohm |
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BU9000xGWZE2 Datasheet(HTML) 4 Page - Rohm |
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4 / 24 page  4/21 Datasheet BU9000xGWZ series TSZ02201-0F2F0AG00010-1-2 © 2012 ROHM Co., Ltd. All rights reserved. 04.Jul.2012 Rev.001 www.rohm.co m TSZ22111・ ・ ・ ・15・ ・ ・ ・001 ● ● ● ● Electrical Characteristic(s) (unless otherwise specified VIN=5.0V, Ta=25 ℃ ) Item Symbol Rating Unit Condition Min. Typ. Max. 【 Switching regulator 】 Output voltage accuracy VOUTA -2 - +2 % MODE:H(PWM Operation) -2 - +3 MODE:L(PFM Operation) Maximum load current IoutMAX1 - - 1.0 A 3.0V ≦ VIN ＜ 5.5V IoutMAX2 - - 0.8 A 2.7V ≦ VIN ＜ 3.0V IoutMAX3 - - 0.6 A 2.3V ≦ VIN ＜ 2.7V IoutMAX4 - - 0.1 A MODE:L(PFM Operation) (BU90005GWZ,) 【 Soft start 】 Soft start time Tss 65 120 240 usec 【 Frequency control 】 Switching frequency fosc 5.4 6.0 6.6 MHz No load, MODE:H (BU90002GWZ,BU90005GWZ, BU90006GWZ) 4.8 5.4 6.0 MHz No load, MODE:H (BU90004GWZ) 3.6 4.0 4.4 MHz No load, MODE:H (BU90003GWZ) 【 Driver 】 PchFET on resistance RonP1 - 250 400 mOhm VIN=5.0V RonP2 300 450 mOhm VIN=3.6V NchFET on resistance RonN1 - 220 350 mOhm VIN=5.0V RonN2 250 380 mOhm VIN=3.6V 【 Control 】 EN pin control voltage Operation VENH 1.4 - VIN V Non Operation VENL 0 - 0.4 V MODE pin control voltage Operation VMODEH 1.4 - VIN V Forced PWM Non Operation VMODEL 0 - 0.4 V Automatic PFM/PWM (BU90005GWZ:Forced PFM) 【 UVLO 】 Protect threshold voltage Uvth 1.95 2.05 2.15 V Hysteresis Uvhy 50 100 150 mV 【 Current limit 】 Current limit threshold ILIMIT 1.5 1.7 1.9 A PMOS current detect, Open loop 【 Output discharge 】 Output discharge resistance DRES 55 110 220 Ohm EN=0V 【 Circuit current 】 Operating quiescent current IINS1 - 45 65 uA EN:H, MODE:L, VOUT=3.6V forced Not switching (BU90003GWZ,BU90004GWZ, BU90005GWZ,BU90007GWZ) IINS2 - 55 80 uA EN:H, MODE:L, VOUT=3.6V forced Not switching (BU90002GWZ,BU90006GWZ) Shutdown current SHD - 0 1 uA EN=0V |
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