GM6655 600mA LOW DROPOUT CMOS VOLTAGE REGULATOR WITH ENABLE FUNCTION Description Features The GM6655 series is a low-dropout linear regulator. This series is specially designed for battery-operated systems. The ground current is very low (50µA Typ), that significantly extending battery life. Low power consumption and high accuracy is achieved through CMOS and programmable fuse technologies with the output voltage range from 1.5V to 6.0V. The GM6655 consists of a high-precision voltage reference, an error correction circuit, and a current limited output driver. With good transient responses, output remains stable even during load changes. The SHDN input enables the output to be turned off, resulting in reduced power consumption. Maximum output current up 600mA Highly accurate output voltage: ±1.5% Low power consumption On-chip protections: Thermal, and Short Circuit Small input/output differential: 600mV at 600mA Also, the GM6655 having high ripple rejection ratios, the series can be used with power supply noise. A 470pF capacitor from the bypass input to ground reduces noise present on the internal reference, which in turn significantly reduces output noise. If output noise is not a concern, this input may be left unconnected. Larger capacitor values Cbp be used, but results in a longer time period to rated output voltage when power is initially applied. The GM6655 incorporates both over-temperature and over-current protection. Application Battery Operated Systems Reference Voltage Sources Portable Computers Instruments Pagers Portable Caremas and Video Recorders Typical Application Circuits GM6655-x.x Enable EN Shutdown 1 5 1 COUT = 1µF 2 3 VOUT = VREF (1+ R2/R1) VIN EN CBP Figure 1 Fixed output version COUT = 1µF 2 Enable BP 4 5 3 Shutdown R1 Adj 4 R2 Figure 2. Adjustable output version Note: EN (Pin 3) maybe connected directly to VIN (Pin1) GM6655V2.05 VIN GM6655-Adj VOUT 1 GM6655 600mA LOW DROPOUT CMOS VOLTAGE REGULATOR WITH ENABLE FUNCTION Marking Information and Pin Configurations (Top View) SOT25 OUT BYP/ADJ 5 4 FEVYW 1 2 3 IN GND EN FE: Device Code, Green Product V: Voltage Code (see next page) Y: Year W: Week code Pin Descriptions Pin Number Pin Name 1 IN 2 GND 3 EN 4 Pin Function Supply Input Ground Enable/Shutdown (Input): CMOS compatible input. Logic high = Enable; logic low or open = shutdown Fixed output BYP Reference Bypass: Connect external 470pF capacitor to GND to reduce output noise. May be left open. Adjustable output ADJ Adjust (Input): Adjustable regulator feedback input. Connect to resistor voltage divider OUT Regulator Output 5 Ordering Information Output Voltage Voltage Code Package Shipping Adj A SOT-25 3,000 Units/Tape and Reel GM6655-1.8ST25RG 1.8V E SOT-25 3,000 Units/Tape and Reel GM6655-2.0ST25RG 2.0V F SOT-25 3,000 Units/Tape and Reel GM6655-2.5ST25RG 2.5V G SOT-25 3,000 Units/Tape and Reel GM6655-2.7ST25RG 2.7V T SOT-25 3,000 Units/Tape and Reel GM6655-2.8ST25RG 2.8V H SOT-25 3,000 Units/Tape and Reel GM6655-2.9ST25RG 2.9V X SOT-25 3,000 Units/Tape and Reel GM6655-3.0ST25RG 3.0V J SOT-25 3,000 Units/Tape and Reel GM6655-3.3ST25RG 3.3V K SOT-25 3,000 Units/Tape and Reel GM6655-3.6ST25RG 3.6V L SOT-25 3,000 Units/Tape and Reel GM6655-4.0ST25RG 4.0V M SOT-25 3,000 Units/Tape and Reel GM6655-4.2ST25RG 4.2V Y SOT-25 3,000 Units/Tape and Reel GM6655-5.0ST25RG 5.0V Q SOT-25 3,000 Units/Tape and Reel Ordering Number GM6655V2.05 GM6655-AST25RG 2 GM6655 600mA LOW DROPOUT CMOS VOLTAGE REGULATOR WITH ENABLE FUNCTION Absolute Maximum Ratings PARAMETER SYMBOL RATINGS UNITS Input Voltage VIN 7 V Output Current IOUT 600 mA Output Voltage VOUT VSS – 0.3 to VIN +0.3 V PD 300 mW Operating Ambient Temperature TA - 40 to 125 ℃ Storage Temperature Tstg - 65 to 150 ℃ + 260 ℃ Continuous Total Power Dissipation SOT-25 Lead Temperature (Soldering, 10 sec) Block Diagram IN OUT BYP VOUT VIN IN VOUT OUT COUT ADJ CBYP (Optional) R1 R2 VREF EN VREF EN COUT CBYP (Optional) Current Limit Current Limit GND Ultra Low Noise Fixed Regulator GND Ultra Low Noise Adjustable Regulator VOUT = VREF (1+ R2/R1) GM6655V2.05 VIN 3 GM6655 600mA LOW DROPOUT CMOS VOLTAGE REGULATOR WITH ENABLE FUNCTION Electrical Characteristics (TA = 25℃, VIN = VOUT + 1V unless otherwise noted) Parameter Symbol Output Voltage Accuracy, Note 2 Condition Min -1.5 +1.5 IOUT = 1 to 600mA, -3.0 +3.0 -0.3 ∆VOI IOUT = 1mA, VOUT + 0.1V < VIN < 6.5V Figure 3 Load Regulation, Note 1 ∆VOL 1mA < IOUT < 600mA COUT = 1µF Figure 4 VOUT > 2.8V ∆V 2.0V < VOUT < 2.8V IOUT = 600mA VOUT < 2.0V Maximum Output Current IOUTMAX Output Current Limit VOUT > 0.96XVRating ICL Quiescent Current VEN= VIN, IOUT = 1 to 600mA, Figure 5 VEN=Gnd (Shutdwon) EN Exit Delay CBP = 0µF, COUT = 1µF, IOUT = 100mA TDLY EN Input Bias Current IBH VEN=VIN EN Input Low Current IBL VEN=Gnd EN Input Threshold Low VTHL EN Input Threshold High VTHH Power Supply Rejection Ration Unit % 0.05 0.3 %/V 0.01 0.04 %/mA 0.6 1.0 0.9 1.4 1.3 1.9 V 600 500 IQ2 Max IOUT = 1mA, Line Regulation Dropout Voltage Typ mA 1,300 mA 50 85 µA 0.001 1 µA 600 µsec 100 -1 nA -3 µA 0.4 V 2 PSRR 10kHz V 55 dB Note 1: Load Regulation is measured using pulse techniques with duty cycle < 5% Note 2: The nominal value of reference voltage for adjustable version is 1.27V (VOUT + 1V) ≤ VIN ≤ 6.5V EN GM6655V2.05 BP 4 VOUT GM6655 VIN EN BP 1µF Fig 3. Line Regulation IOUT = 1mA VIN EN VOUT GM6655 BP 1µF 1mA ≤ IOUT ≤ 600mA Pulse with duty cycle 5% Fig 4. Load Regulation VOUT GM6655 IOUT = 600mA Fig 5. Load Regulation GM6655 600mA LOW DROPOUT CMOS VOLTAGE REGULATOR WITH ENABLE FUNCTION Typical Performance Characteristics 80 70 60 50 40 30 20 50mA 10 1mA 0 0.01 30mA 0.1 1 Frequency (kHz) 10 100 Fig 6. PSRR vs. Frequency GM6655V2.05 Ripple Rejection (dB) 90 5 GM6655 600mA LOW DROPOUT CMOS VOLTAGE REGULATOR WITH ENABLE FUNCTION Package Outline Dimensions – SOT 25 2.9 ± 0.1 1.9 ± 0.05 0.13 0.95 ± 0.038 Pad Layout 0.028 0.7 0~0.1 1.5 ± 0.05 2.8 ± 0.1 0.039 1.0 0.094 2.4 0.65 ± 0.05 0.8 ± 0.05 0.35 ± 0.03 0.037 0.95 5° 0.074 1.9 5° GM6655V2.05 1.10 ± 0.1 6 0.037 0.95 Unit:mm (Inches ) mm GM6655 600mA LOW DROPOUT CMOS VOLTAGE REGULATOR WITH ENABLE FUNCTION Ordering Number GM 6655 - 1.8 APM Gamma Micro Circuit Type ST25 R Output Voltage Package Type Shipping Type 1.8 = 1.8V 2.0 = 2.0V 2.5 = 2.5V 3.3 = 3.3V 5.0 = 5.0V A=adj ST25: SOT 25 R: Tape & Reel G Blank: Pb-free G:Green Note: Pb-free products: ♦ RoHS compliant and compatible with the current require-ments of IPC/JEDEC J-STD-020. ♦ Suitable for use in SnPb or Pb-free soldering processes with 100% matte tin (Sn) plating. ♦ Lead-free (RoHS compliant) ♦ Halogen free(Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight) GM6655V2.05 Green products: 7