LD6938CX6/285285PJ

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 LD6938 series NXP Semiconductors 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. LD6938_SER Objective data sheet Pin description for WLCSP6 Symbol Pin Description EN1 A1 regulator 1 enable input OUT1 A2 regulator 1 output voltage GND B1 supply ground IN B2 supply voltage input EN2 C1 regulator 2 enable input OUT2 C2 regulator 2 output voltage All information provided in this document is subject to legal disclaimers. Rev. 1 — 11 July 2013 © NXP B.V. 2013. All rights reserved. 2 of 15 LD6938 series NXP Semiconductors Dual low-dropout regulators, low noise, 300 mA 3. Ordering information Table 2. Ordering information Type number Package Name LD6938CX6 Description Version WLCSP6 wafer level chip-size package; 6 bumps (2  3) - 3.1 Ordering options Further output voltage versions and optional delay circuit for the second LDO are available on request; see Section 15 “Contact information”. Table 3. Type number Nominal output voltage VO(nom) OUT1 OUT2 LD6938CX6/1818H 1.8 V 1.8 V Table 4. LD6938_SER Objective data sheet Type number extension of high ohmic output Type number extension for auto discharge Type number Nominal output voltage VO(nom) OUT1 OUT2 LD6938CX6/1215PL 1.2 V 1.5 V LD6938CX6/1218PL 1.2 V 1.8 V LD6938CX6/18125PL 1.8 V 1.25 V LD6938CX6/1818PL 1.8 V 1.8 V LD6938CX6/1833PL 1.8 V 3.3 V LD6938CX6/285285PL 2.85 V 2.85 V LD6938CX6/3018PL 3.0 V 1.8 V LD6938CX6/3030PL 3.0 V 3.0 V LD6938CX6/33285PL 3.3 V 2.85 V LD6938CX6/3333PL 3.3 V 3.3 V All information provided in this document is subject to legal disclaimers. Rev. 1 — 11 July 2013 © NXP B.V. 2013. All rights reserved. 3 of 15 LD6938 series NXP Semiconductors Dual low-dropout regulators, low noise, 300 mA 4. Block diagram ,1 287 62)767$57 (1 (1 9UHI *(1(5$725 7+(50$/ 3527(&7,21 '(/$