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LD6938

NXP
Part Number LD6938
Manufacturer NXP
Description Dual low-dropout regulators
Published Jan 26, 2015
Detailed Description LD6938 series Dual low-dropout regulators, low noise, 300 mA Rev. 1 — 11 July 2013 Objective data sheet 1. Product p...
Datasheet PDF File LD6938 PDF File

LD6938
LD6938

Overview
LD6938 series Dual low-dropout regulators, low noise, 300 mA Rev.
1 — 11 July 2013 Objective data sheet 1.
Product profile 1.
1 General description The LD6938 series consists of small-size dual Low DropOut regulators (LDO).
Each device delivers two times 300 mA with a typical voltage drop of 240 mV at full output load.
The devices offer two separate fixed nominal output voltages (VO(nom)) in the range of 1.
2 V to 3.
3 V.
The LDO has an integrated Soft start to control the inrush current during start-up.
The output mode, when disabled, can be high-ohmic 3-state or auto discharge.
Optionally a delayed start-up circuit is available for the second output.
The devices are available in a 6-bump Wafer-Level Chip-Scale Package (WLCSP) with a height of 0.
47 mm.
1.
2 Features and benefits  High Power Supply Rejection Ratio (PSRR)  Low output noise  Low quiescent current  Extremely low standby current ( 0.
1 A)  Soft start circuit to limit inrush current  Output current limiter with foldback circuit  Overtemperature protection  Delayed output circuit for second LDO (optional)  Auto discharge or high-ohmic mode for output when disabled  WLCSP6 with 0.
4 mm pitch and package size of 1.
2 mm  0.
8 mm  0.
47 mm 1.
3 Applications  Smartphones  Mobile handsets  Digital still cameras  Tablet PCs  Mobile internet devices  Portable media players 1.
4 Quick reference data  IO = 300 mA for each LDO  PSRR = 80 dB at 1 kHz  RMS noise Vn(o)RMS = 70 V at 10 Hz to 100 kHz  tstartup(reg)  200 s  VI = 1.
7 V to 5.
5 V  VO = 1.
2 V to 3.
3 V (fixed value)  Drop voltage Vdo = 240 mV at IO = 300 mA  Quiescent current Iq = 30 A for each LDO at IO = 0 mA NXP Semiconductors LD6938 series Dual low-dropout regulators, low noise, 300 mA 2.
Pinning information 2.
1 Pinning EDOO$ LQGH[DUHD /'&; (1 $ $ 287 *1' % % ,1 (1 & & 287 DDD WUDQVSDUHQWWRSYLHZ VROGHUEDOOVIDFLQJGRZQ Fig 1.
Pin configuration for WLCSP6 2.
2 Pin description Table 1.
Symbol ...


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