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BD83070GWL

更新时间： 2024-11-05 11:08:11
品牌 Logo 应用领域
罗姆 - ROHM 电子电池驱动
页数 文件大小 规格书
24页 2278K
描述
“BD83070GWL”是面向小型电池驱动的电子设备，以“低功耗环保元器件的标杆版”为目标开发而成的超低功耗升降压型电源IC。产品内置低损耗的MOSFET，并配置低耗电消耗电流电路，在各种电池驱动设备（电动牙刷以及剃须刀等）工作时（负载电流200mA时），功率转换效率高达97%，而且，消耗电流仅为2.8µA，在升降压型电源IC领域中也达到极高水平。因此，相比普通产品效率大大提升的应用在待机时（负载电流100µA时），电池续航时间可延长1.53倍（ROHM调查数据），非常有助于延长小型电池驱动的各种电子设备的续航时间。

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BD83070GWL 数据手册

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Datasheet  
Synchronous Buck-Boost DC/DC Converter  
with 2 A Switches (VIN = 2.0 V to 5.5 V, 1ch)  
BD83070GWL  
General Description  
Key Specifications  
Input Voltage Range:  
Output Voltage:  
The BD83070GWL is a synchronous buck-boost DC/DC  
convertor providing 3.3 V or 2.5 V output from single-cell  
Li-ion battery or other input between 2.0 V and 5.5 V. It  
has the capability to support up to 1 A output over input  
voltage range of 2.7 V to 5.5 V. It seamlessly changes  
between buck and boost operations depending on the  
input voltage.  
2.0 V to 5.5 V  
2.5 V or 3.3 V  
1 A(Max)  
1.5 MHz(Typ)  
2.8 μA(Typ)  
Output Current:  
Switching Frequency:  
Quiescent VIN Current:  
Operating Temperature Range: -40 °C to +85 °C  
It is based on pulse width modulation (PWM) and  
provides high efficiency for heavy load. While in PWM  
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 μA  
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.  
Package  
W(Typ) x D(Typ) x H(Max)  
UCSP50L1C (12Pin) 1.20 mm × 1.60 mm × 0.57 mm  
The device is packaged in a 1.2 mm x 1.6 mm WLCSP  
package.  
Applications  
Single Cell Li-ion or 3 Cell NiMH Battery-Powered  
Portable Products  
Tablet Terminal Device  
Features  
Synchronous Buck-Boost DC/DC Converter  
Automatic PFM/PWM Transition  
Output Current: Up To 1 A (VIN > 2.7 V, VOUT = 3.3 V)  
Selectable Output Voltage: 2.5 V or 3.3 V  
Efficiency: Up To 95 %  
Smartphone  
UVLO Detection: 1.61 V(Max)  
Built-in Thermal, Over Voltage, And Over Current  
Protection  
Typical Application Circuit  
L1: 1.5 μH  
VIN  
VOUT  
3.3 V (up to 1 A)  
LX1  
LX2  
2.0 V to 5.5 V  
PVIN  
VIN  
VOUT  
C1: 10 μF  
C2: 22 μF  
FB  
ON  
OFF  
EN  
VSEL  
Forced-PWM  
MODE  
REF  
Auto-PFM/PWM  
GND PGND  
C3: 0.47 μF  
Figure 1. Typical Application Circuit  
〇Product structure : Silicon integrated circuit 〇This product has no designed protection against radioactive rays  
.www.rohm.com  
TSZ02201-0Q3Q0A900570-1-2  
09.Oct.2018 Rev.001  
© 2018 ROHM Co., Ltd. All rights reserved.  
1/21  
TSZ22111 • 14 • 001  
 
 
 
 
 
 
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