Datasheet Power Supply Selector Switch IC for SD Cards BD2204GUL General Description Key Specifications BD2204GUL is high side switch IC that has built-in 2 Input voltage range: VIN1=2.7 to 4.5V circuits of MOSFET. Switch has achieved 120m(Typ) VIN2=1.2 to 2.4V on-resistance. 3.3V power supply and 1.8V power ON resistance: 120m(Typ) supply for memory card can be selected by SEL terminal. Operating current: 25A(Typ) Moreover, it has built-in simultaneous-on prevention Standby current: 0.01A(Typ) function at power switching, reverse-current protection Operating temperature range: -40 to +85 C function to prevent reverse-current from output terminal to input terminal at power-off, and discharge circuit to discharge electricity in output terminal. Package W(Typ) x D(Typ) x H(Max) VCSP50L1 1.50mm x 1.00mm x 0.55mm Features Dual channel of low on resistance (Typ = 120m) N-channel MOSFET built in. 3.3V and 1.8V are chosen and an output is possible. 0.5A Continuous Current load. Reverse-current protection when power switch off. Prevent VIN1 and VIN2 from simultaneous-on. Output Discharge Circuit Thermal Shutdown Active-High Control Logic VCSP50L1 package VCSP50L1 Applications Digital cameras Digital video camera SD cards slot Typical Application Circuit 3.3V LOAD VIN1 VOUT 0.1F CL 1.8V VIN2 GND EN SEL Figure 1. Typical application circuit Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0GDG0H300050-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/23 TSZ22111 14 001 25.Sep.2015 Rev.003 BD2204GUL Block Diagram VIN1 EN VOUT Charge LOGIC SEL Pump EN TSD VIN2 GND + - Figure 2. Block Diagram Pin Configuration A B B A 1 2 3 1 2 3 Top View Bottom View Figure 3. Pin Configuration Pin Description Pin No. Symbol I / O Pin function A1 VIN1 I Switch1 input and supply voltage for IC A2 VIN2 I Switch2 input A3 EN I Active-high enable input with pull-down resistance (Typ 700k) B1 VOUT O Switch output B2 GND - Ground Output selector input with pull-down resistance (Typ 700k) B3 SEL I As SEL=L, VOUT=3.3V output, as SEL=H, VOUT=1.8V output Absolute Maximum Ratings (Ta = 25C) Parameter Symbol Ratings Unit Switch1 input voltage V -0.3 to 6.0 V IN1 Switch2 input voltage V -0.3 to 6.0 V IN2 EN voltage VEN -0.3 to 6.0 V SEL voltage V -0.3 to 6.0 V SEL VOUT voltage VOUT -0.3 to 6.0 V Output current IOUT 1.0 A Storage temperature TSTG -55 to 150 C (Note 1) Power dissipation Pd 0.57 W (Note 1) In the case of exceeding Ta > 25C, 4.6mW should be reduced per 1C (Mount on 50mm x 58mm x 1.75mm Glass Epoxy Board) Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the absolute maximum ratings www.rohm.com TSZ02201-0GDG0H300050-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/23 TSZ22111 15 001 25.Sep.2015 Rev.003