Date: 28/02/2011

200 mA CMOS LDO in WCSP4 Package takes only 0.63 mm2 mounting area

Toshiba has added the TCR4SxxWBG and TC4SxxDWBG series to its family of 200mA CMOS Low Drop-Out regulators (LDOs). The new single-output LDO regulators feature an ultra-small WCSP4 package which measures 0.79mmx0.79mmx0.50mm and requires a 0.63 mm2 mounting area. The TCR4SxxWBG and TCR4SxxDWBG series are ideal for applications that require high-density packaging, such as mobile phones, portable audio players and a range of mobile equipment. Toshiba also offers single-output LDO regulators in SMV, (SOT-25) , UFV, and ESV (SOT-553) packages.

An increasing number of low voltage applications require the use of LDOs, as these regulators provide a stable power supply voltage independent of load impedance, and input-voltage variations. Toshiba's TCR4SxxWBG LDO and TCR4SxxDWBG regulators feature an output voltage range from 1.2V and 3.6V in increments of 50mV. The maximum output current is 200mA and over-current protection functionality is built-in. In addition, Toshiba's TCR4SxxDWBG LDO regulators provide built-in auto-discharge and control pull-down resistor functions. Product Lineup of Ultra-small Package (WCSP4) 200 mA CMOS LDO Single-output Regulators
Part Number VOUT (V) Auto-discharge function Features
TCR4S15WBG 1.5 N/A Maximum output current (IOUT = 200 mA (max.))
Low bias current (IB = 45µA (typ.) TCR4SxxWBG @ IOUT = 0mA)
Low stand-by current (IB(OFF) = 0.1µA (typ.) @ in stand-by mode)
Low drop-out voltage (VIN - VOUT = 90mV (typ.) @ TCR4S25WBG/DWBG, IOUT = 50mA)
High ripple rejection (R.R. = 80dB (typ.) @ IOUT = 10mA, f =1 kHz)
Low output noise voltage (VNO = 30µVrms (typ.) @ TCR4S25WBG/DWBG, IOUT = 10mA, 10Hz < f < 100kHz)
Built-in over-current protection circuit
Ceramic capacitors (CIN = 0.1µF, COUT = 1.0µF) can be used
Ultra-small package WCSP4 (0.79mm x 0.79mm x 0.50mm)
Built-in auto-discharge function (TCR4SxxDWBG)
Built-in control pull-down resistor (TCR4SxxDWBG
TCR4S18WBG 1.8
TCR4S28WBG 2.8
TCR4S30WBG 3.0
TCR4S36WBG 3.6
TCR4S12DWBG 1.2 Built-in as standard
TCR4S15DWBG 1.5
TCR4S18DWBG 1.8
TCR4S20DWBG 2.0
TCR4S21DWBG 2.1
TCR4S25DWBG 2.5
TCR4S26DWBG 2.6
TCR4S27DWBG 2.7
TCR4S28DWBG 2.8
TCR4S285DWBG 2.85
TCR4S29DWBG 2.9
TCR4S295DWBG 2.95
TCR4S30DWBG 3.0
TCR4S33DWBG 3.3