BD83070GWL-E2

Datasheet S ynchronous Buck-Boost DC/DC Converter with 2 A Switches (V = 2.0 V to 5.5 V, 1ch) IN BD83070GWL General Description Key Specifications The BD83070GWL is a synchronous buck-boost DC/DC Input Voltage Range: 2.0 V to 5.5 V convertor providing 3.3 V or 2.5 V output from single-cell Output Voltage: 2.5 V or 3.3 V Li-ion battery or other input between 2.0 V and 5.5 V. It Output Current: 1 A(Max) has the capability to support up to 1 A output over input Switching Frequency: 1.5 MHz(Typ) voltage range of 2.7 V to 5.5 V. It seamlessly changes Quiescent VIN Current: 2.8 A(Typ) between buck and boost operations depending on the Operating Temperature Range: -40 C to +85 C input voltage. It is based on pulse width modulation (PWM) and Package W(Typ) x D(Typ) x H(Max) provides high efficiency for heavy load. While in PWM UCSP50L1C (12Pin) 1.20 mm 1.60 mm 0.57 mm operation, internal FETs switch at fixed frequency 1.5 MHz typical. It automatically changes over control system to hysteresis pulse frequency modulation (PFM) to suppress switching loss and current consumption during light load. Battery drain fall down to only 2.8 A typical at no load current. It is possible to disable auto-PFM/PWM mode by the MODE pin for suppressing output ripple and fixed frequency switching. The device is packaged in a 1.2 mm x 1.6 mm WLCSP Applications package. Single Cell Li-ion or 3 Cell NiMH Battery-Powered Portable Products Features Tablet Terminal Device Synchronous Buck-Boost DC/DC Converter Smartphone Automatic PFM/PWM Transition Output Current: Up To 1 A (V > 2.7 V, V = 3.3 V) IN OUT Selectable Output Voltage: 2.5 V or 3.3 V Efficiency: Up To 95 % UVLO Detection: 1.61 V(Max) Built-in Thermal, Over Voltage, And Over Current Protection Typical Application Circuit L1: 1.5 H V V IN OUT LX1 LX2 2.0 V to 5.5 V 3.3 V (up to 1 A) PVIN VOUT C1: 10 F C2: 22 F FB VIN ON EN VSEL OFF Forced-PWM MODE REF Auto-PFM/PWM GND PGND C3: 0.47 F Figure 1. Typical Application Circuit Product structure : Silicon integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0Q3Q0A900570-1-2 2018 ROHM Co., Ltd. All rights reserved. 1/21 TSZ22111 14 001 09.Oct.2018 Rev.001 BD83070GWL Contents General Description ........................................................................................................................................................................ 1 Features.......................................................................................................................................................................................... 1 Key Specifications .......................................................................................................................................................................... 1 Package .......................................................................................................................................................................................... 1 Applications .................................................................................................................................................................................... 1 Typical Application Circuit ............................................................................................................................................................... 1 Contents ......................................................................................................................................................................................... 2 Pin Configuration ............................................................................................................................................................................ 3 Pin Descriptions .............................................................................................................................................................................. 3 Block Diagram ................................................................................................................................................................................ 4 Absolute Maximum Ratings ............................................................................................................................................................ 4 Thermal Resistance ........................................................................................................................................................................ 5 Recommended Operating Conditions ............................................................................................................................................. 5 Electrical Characteristics................................................................................................................................................................. 5 Detailed Descriptions ...................................................................................................................................................................... 7 Typical Performance Curves ........................................................................................................................................................... 8 Application Examples ................................................................................................................................................................... 15 I/O Equivalence Circuits................................................................................................................................................................ 16 Operational Notes ......................................................................................................................................................................... 17 Ordering Information ..................................................................................................................................................................... 19 Marking Diagram .......................................................................................................................................................................... 19 Physical Dimension and Packing Information ............................................................................................................................... 20 Revision History ............................................................................................................................................................................ 21 www.rohm.com TSZ02201-0Q3Q0A900570-1-2 2018 ROHM Co., Ltd. All rights reserved. 2/21 TSZ22111 15 001 09.Oct.2018 Rev.001