High Speed Low Dropout Middle Current Voltage Regulators. Designator Symbol Description Designator Symbol Description CE Pin Logic :

Transcription

1 High Speed Low Dropout Middle Current Voltage Regulators General Description The series are highly precise, low noise, positive voltage LDO regulators manufactured using CMOS processes. The series achieves high ripple rejection and low dropout and consists of a standard voltage source, an error correction, current limiter and a phase compensation circuit plus a driver transistor. Output voltage is selectable in 100mV increments within a range of 1.5V ~ 5.0V. The series is also compatible with low ESR ceramic capacitors which give added output stability. This stability can be maintained even during load fluctuations due to the excellent transient response of the series. The current limiter's feedback circuit also operates as a short protect for the output current limiter and the output pin The CE function enables the output to be turned off, resulting in greatly reduced power consumption. Features Output Voltage Range: 1.0V to 5.0V (selectable in 100mV steps) Highly Accurate: ± 2% Dropout Voltage: 100mA (3.0V type) Ordering Information High Ripple Rejection: 70dB (10 khz) Low Power Consumption: 70μA (TYP.) Maximum Output Current : 300mA Standby Current : less than 2μA Internal protector: current limiter Internal discharge MOS Applications Mobile phones Cordless phones Cameras, Video cameras Portable games Portable AV equipment Reference voltage Battery powered equipment Package SOT-23-5L DFNWB1X1-4L SOT-353/SC70-5 SOT Designator Symbol Description Designator Symbol Description CE Pin Logic : Package Type : A Active 'High' (pull-down resistor built in) M SOT-23-5L Active 'High' (no pull-down resistor built 1 B 5 K SOT-353/SC70-5 in) C Active 'Low' (pull-up resistor built in) C SOT-343 D Active 'Low' (no pull-up resistor built in) D DFNWB1 1-4L Output Voltage: Device Orientation : e.g. 20 = 2.0V 30 = 3.0V etc. Output Voltage : 100mV increments Embossed Tape : 2 6 R e.g. 2=3, 3=8, 4=2 3.8V Standard Feed 4 Output Voltage : 50mV increments Embossed Tape : A L e.g. 2=3, 3=8, 4=A 3.85V Reverse Feed Rev.1.0 Aug. 14,

2 Pin Configuration VOUT (NC) VIN VOUT VIN VSS CE CE VSS SOT-23-5,SOT-353/SC SOT-343 Pin Assignment Pin Number SOT-23-5L DFNWB1 1-4L SOT-353/SC70-5 SOT-343 Pin Name Function VIN Supply power VSS Ground CE Enable pin NC NC VOUT Voltage output Marking Rule SOT-23-5,SOT-353,SOT-343(Top View) SOT-23-5,SOT-353/SC SOT Represents the product name Symbol Product Name 4 2 Represents the type of regulator Voltage(V) 1.0~ ~ ~ ~6.05 V A E L A Symbol X B F M Product B Y C H N Name C Z D K P D Rev.1.0 Aug. 14,

3 3 Represents the Output Voltage Symbol Output Voltage(V) Symbol Output Voltage(V) F H K L M N P R S T A U B V C X D Y E Z Represents the assembly lot no. 0~9, A~Z repeated (G, I, J, O, Q, W excepted) DFNWB1 1-4L (Top View) Represents the output voltage Symbol Output Symbol Output Symbol Output Symbol Output A 1.1 K 2.1 U B 1.2 L 2.2 V C 1.3 M 2.3 W D 1.4 N 2.4 X E 1.5 O 2.5 Y F 1.6 P 2.6 Z G 1.7 Q H 1.8 R * 4.8 I 1.9 S ? 4.9 J 2.0 T = 5.0 Rev.1.0 Aug. 14,

4 2Represents the version of wafer. 3Represents the information of QA. 0~9, A~Z repeated (G, I, J, O, Q, W excepted) Function Block Diagram VIN CE ON/OFF Control each - + Current Limiter VOUT R2 R1 Voltage Reference VSS Absolute Maximum Ratings Parameter Symbol Maximum Rating Unit Input Voltage V IN V ON/OFF V SS-0.3~V SS+8 V SS-0.3~V IN+0.3 V Output Current V OUT V SS-0.3~V IN+0.3 SOT Power Dissipation P D SOT-353/SC70-5,SOT mw DFNWB L 100 Operating Ambient Temperature Topr -40~+85 Storage Temperature Tstg -40~+125 C Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. Rev.1.0 Aug. 14,

5 Typical Application Circuit VIN Common C1 1uF ON/OFF VIN VOUT CE VSS (NC) C2 2.2uF VOUT Common Caution: The above connection diagram and constant will not guarantee successful operation. Perform thorough evaluation using the actual application to set the constant. Electrical Characteristics Parameter Symbol Condition Min Typ Max Unit Output Voltage V OUT(E) V IN =V OUT(S)+1.0 V, I OUT=30 ma V OUT(S) 0.98 V OUT(S) V OUT(S) 1.02 V Output Current I OUT V IN V OUT(S)+1.0 V 300 ma Dropout Voltage V drop I OUT=50 ma I OUT=100 ma V Line Regulations Load Regulation V OUT 2 Output Voltage Temperature Characteristics VOUT 1 V OUT(S)+0.5 V V IN 7 V VIN VOUT I OUT=30 ma V Ta V OUT OUT V IN=V OUT(S)+1.0 V 1.0 ma I OUT 100 ma V IN=V OUT(S)+1.0 V, I OUT=10 ma -40 C Ta 85 C %/V mv ±100 ppm/ Supply Current I SS1 V IN=V OUT(S)+1.0 V 70 μa Input Voltage V IN V Ripple-Rejection PSRR V IN=V OUT(S)+1.0 V,f=10 khz Vrip=0.5 Vrms, I OUT=50 ma 70 db Short-circuit Current Ishort V IN=V OUT(S)+1.0 V,V CE on V OUT=gnd 40 ma CE High Voltage V CEH 1.6 VIN V CE Low Voltage V CEL 0.25 V CE High Current (no resistor built in) CE Low Current (no resistor built in) I CEH VIN=VCE=VOUT(T)+1.0V ua I CEH VIN= VOUT(T)+1.0V, ua VCE=VSS Rev.1.0 Aug. 14,

6 Typical Performance Characteristics (3.0V output) 1 Output Voltage vs. Output Current 3 Dropout Voltage vs. Output Current 2 Output Voltage vs. Input Voltage (Contd.) 4 Dropout Voltage vs. Output Voltage 5 Output Voltage vs. Ambient Temperature 6 Ripple Rejection Rate 7 Transient Response Input Transient Response Load Transient Response Rev.1.0 Aug. 14,

7 Package Information SOT-23-5L Rev.1.0 Aug. 14,

8 DFNWB1X1-4L Rev.1.0 Aug. 14,

9 SOT-353 Rev.1.0 Aug. 14,

10 SOT-343 Rev.1.0 Aug. 14,