BU28SA4WGWL
200mA 2.8V, Fixed Output, High PSRR, High-Accuracy CMOS LDO Regulator

BUxxSA4 series are high-performance CMOS LDO regulators with output current ability of up to 200-mA. These devices have excellent noise and load response characteristics despite of its low circuit current consumption of 40µA. They are most appropriate for various applications such as power supplies for logic IC, RF, and camera modules.

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Product Detail

 
Part Number | BU28SA4WGWL-E2
Status | Active
Package | UCSP50L1
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes

Specifications:

Grade

Standard

Breakdown Voltage(Max.)[V]

6.5

ch

1

Vin(Min.)[V]

1.7

Vin(Max.)[V]

5.5

Vout (Typ.) [V]

2.8

Vout Precision

±0.6%

Iout(Max.)[A]

0.2

Circuit Current[mA]

0.04

Output Short Current[mA]

100

Shutdown Function

Yes

Thermal Shut-down

Yes

Over Current Protection

Yes

Over Voltage Protection

No

Discharge Function

No

Soft Start

No

I/O Voltage Difference (Typ.)[V]

0.08(Io=0.1A)

Ripple Rejection [dB]

70.0

Input Capacitor[µF]

0.47

Output Capacitor[µF]

0.47

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

85

Package Size

0.8x0.8 (t=0.55)

Features:

・ High Output Voltage Accuracy: ±0.6%
(±15mV on VOUT<2.5V)
・ High Ripple Rejection: 70 dB (Typ, 1 kHz,)
・ Compatible with small ceramic capacitor
(Cin=Cout=0.47 μF)
・ Low Current Consumption: 40 μA
・ Output Voltage ON/OFF control
・ Built-in Over Current Protection Circuit (OCP)
・ Built-in Thermal Shutdown Circuit (TSD)
・ Adopting ultra-small WLCSP UCSP50L1
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Design Resources

 

Documents

Application Note

  • BUxxSA4 Series Dropout Voltage
  • BHxxRB1, BHxxSA3, BUxxSA4, BUxxSA5 Series PCB Layout

Technical Articles

Schematic Design & Verification

  • Basics of Linear Regulators
  • Linear Regulator Specifications
  • Reverse Voltage Protection
  • Power Source ON/OFF Characteristics for Linear Regulator
  • Simple Test Method for Estimating the Stability of Linear Regulators
  • Connecting LDOs in Parallel
  • Problem Situations: Power Supply Does Not Start
  • Power Supply Sequence Circuit with General Purpose Power Supply IC
  • Table of resistance for output voltage setting on linear regulator Ics
  • Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter
  • Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)
  • Usage of SPICE Macromodel (for LDO)
  • BAxxCC0 Series Circuit Using a Ceramic Output Capacitor
  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • What Is Thermal Design
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Thermal Calculation for Linear Regulator
  • Thermal Resistance

Packaging & Quality

Package Information

  • Package Information

Manufacturing Data

  • Factory Information

Environmental Data

  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)