UM1770 UNIONSEMI | Alldatasheet

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Technical content

Features

 Bluetooth/802.11 Cards  PDAs and Notebook Computers  Portable Instruments and Battery-Powered Systems  Cellular Phones  Very Low Dropout: 320mV(max) at 500mA  Maximum Input Voltage: 6.0V  Low Noise (10Hz to 100kHz): 90μVRMS (Fixed Output, VOUT=1.0V); 60μVRMS (Adjustable Output, VOUT=1.0V); 194μVRMS (Adjustable Output, VOUT=3.3V); 305μVRMS (Adjustable Output, VOUT=5.0V)  ±2% Voltage Accuracy at 500mA  Fast Transient Response  Under Voltage Lockout  Fixed Output Voltage of UM1770Y/DA-xx: 1.0V to 4.0V with 0.1V Interval  Adjustable Output Voltage of UM1770Y/DA-00: 1.0V to 5.0V  Output Current Limit  Stable with 1μF Output Capacitor  Short-Circuit and Thermal Overload Protection  Low Profile SOT89-5 and DFN6 2.0× 2.0 Packages

http://www.union-ic.com Rev.05 Jan.2015 2/13 UM1770 Pin Configurations Top View Pin Description Pin Number (Fixed VOUT) Pin Number (Adjustable VOUT) Symbol Function DFN6 2.0× 2.0 SOT89-5 DFN6 2.0× 2.0 SOT89-5 1 3 1 3 SHDN Shutdown Input: High=Active LDO, Low=Shutdown LDO 2 2 2 2 GND Ground 3 4 3 4 VIN Power Supply 4 5 4 5 VOUT Voltage Regulated Output 5, 6 1 5 - NC Not Connected - - 6 1 FB Output Voltage Feedback (Top View) 1SHDN GND VIN VOUT NC NC AXX M Marking PIN1 M: Month Code UM1770DA-xx DFN6 2.0× 2.0 (Top View) 1SHDN GND VIN VOUT NC FB AFJ M Marking PIN1 M: Month Code UM1770DA-00 DFN6 2.0× 2.0 3 4 5NC GND SHDN VIN VOUT GND 1 2 3 1770-XX XX XX: Week Code UM1770Y-xx SOT89-5 3 4 5FB GND SHDN VIN VOUT GND 1 2 3 1770-00 XX XX: Week Code UM1770Y-00 SOT89-5

http://www.union-ic.com Rev.05 Jan.2015 3/13 UM1770 Naming Information UM1770 Package Type Y: SOT89-5 DA: DFN6 2.0×2.0 00: Adjustable Output Voltage Fixed Output Voltage 10: 1.0V 11: 1.1V 12: 1.2V 40: 4.0V

Ordering Information

Part Number Output Voltage Packaging Type Marking Code Shipping Qty UM1770Y-00 ADJ SOT89-5 1770-00 1000pcs/7Inch Tape & Reel UM1770Y-10 1.0V 1770-10 UM1770Y-11 1.1V 1770-11 UM1770Y-12 1.2V 1770-12 UM1770Y-13 1.3V 1770-13 UM1770Y-14 1.4V 1770-14 UM1770Y-15 1.5V 1770-15 UM1770Y-16 1.6V 1770-16 UM1770Y-17 1.7V 1770-17 UM1770Y-18 1.8V 1770-18 UM1770Y-19 1.9V 1770-19 UM1770Y-20 2.0V 1770-20 UM1770Y-21 2.1V 1770-21 UM1770Y-22 2.2V 1770-22 UM1770Y-23 2.3V 1770-23 UM1770Y-24 2.4V 1770-24 UM1770Y-25 2.5V 1770-25 UM1770Y-26 2.6V 1770-26 UM1770Y-27 2.7V 1770-27 UM1770Y-28 2.8V 1770-28 UM1770Y-29 2.9V 1770-29 UM1770Y-30 3.0V 1770-30 UM1770Y-31 3.1V 1770-31 UM1770Y-32 3.2V 1770-32 UM1770Y-33 3.3V 1770-33 UM1770Y-34 3.4V 1770-34 UM1770Y-35 3.5V 1770-35 UM1770Y-36 3.6V 1770-36 UM1770Y-37 3.7V 1770-37 UM1770Y-38 3.8V 1770-38 UM1770Y-39 3.9V 1770-39 UM1770Y-40 4.0V 1770-40

http://www.union-ic.com Rev.05 Jan.2015 4/13 UM1770 Ordering Information (Continued) Part Number Output Voltage Packaging Type Marking Code Shipping Qty UM1770DA-00 ADJ DFN6 2.0× 2.0 AFJ 3000pcs/7Inch Tape & Reel UM1770DA-10 1.0V AAS UM1770DA-11 1.1V AA T UM1770DA-12 1.2V AAC UM1770DA-13 1.3V AAD UM1770DA-14 1.4V AAU UM1770DA-15 1.5V AAJ UM1770DA-16 1.6V AFE UM1770DA-17 1.7V AFF UM1770DA-18 1.8V AAK UM1770DA-19 1.9V AFG UM1770DA-20 2.0V AFH UM1770DA-21 2.1V AFK UM1770DA-22 2.2V AFL UM1770DA-23 2.3V AFN UM1770DA-24 2.4V AFP UM1770DA-25 2.5V AAN UM1770DA-26 2.6V AFQ UM1770DA-27 2.7V AFR UM1770DA-28 2.8V AAQ UM1770DA-29 2.9V AFS UM1770DA-30 3.0V AAR UM1770DA-31 3.1V AFT UM1770DA-32 3.2V AFU UM1770DA-33 3.3V AA V UM1770DA-34 3.4V AFV UM1770DA-35 3.5V AAZ UM1770DA-36 3.6V AFZ UM1770DA-37 3.7V AGL UM1770DA-38 3.8V AGN UM1770DA-39 3.9V AGP UM1770DA-40 4.0V AGQ

http://www.union-ic.com Rev.05 Jan.2015 5/13 UM1770 Absolute Maximum Ratings (Note 1) Symbol Parameter Value Unit VIN Supply Voltage on IN Pin -0.3 to +7.5 V VSHDN Voltage on SHDN Pin -0.3 to +7.5 V VOUT Voltage on OUT Pin -0.3 to +7.5 V VFB Voltage on FB Pin -0.3 to +7.5 V TJ Operating Junction Temperature (Notes 2, 3) -40 to +125 °C TSTG Storage Temperature Range -65 to +150 °C TL Lead Temperature for Soldering 10 seconds +300 °C PD (Notes 4) Power Dissipation@25°C DFN6 2.0× 2.0 0.9 W SOT89-5 1.5 θJA Package Thermal Resistance DFN6 2.0× 2.0 110 ° C/W SOT89-5 66 Note 1: Absolute Maximum Ratings are tho se values beyond which the life of a device may be impaired. Note 2: The UM1770 is tested and specified under pul se load conditions such that T J≈TA. Specifications over the –40℃ to 125℃ operating junction temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: This IC includes over -temperature protection that is intended to prot ect the device during momentary overload conditions. Junct ion temperature will exceed 125 ℃ when over-temperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 4: The maximum a llowable power dissipation of any T A (ambient temperature) is P DMAX = (TJMAX - TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature and the regulator will go into thermal shutdown.

http://www.union-ic.com Rev.05 Jan.2015 6/13 UM1770

Electrical Characteristics

Over recommended operating free-air temperature range (unless otherwise noted) Symbol Parameter Test Conditions Min Typ Max Unit VIN Input Voltage Range 2.5 6.0 V VUVLO Input Under Voltage Lockout VIN falling 1.8 2.4 V IQ Operating Quiescent Current VIN=4.2V, IOUT=0mA 92 140 μA VIN=4.2V, IOUT=500mA 250 300 ISHDN Shutdown Leakage Current 1 μA IOUT Output Current 500 mA Output Voltage Accuracy 1mA≤IOUT≤500mA, TA=-25℃ -2 +2 % ΔVDO Dropout Voltage IOUT=500mA，2.5V≤VOUT 220 320 mV ILIMT Output Current Limit VIN≥2.5V 700 mA t Startup Time Response RL=68Ω, COUT=1μF 40 μs VIL SHDN Input Low Voltage 2.5V≤VIN≤6.0V 0.4 V VIH SHDN Input High Voltage 2.5V≤VIN≤6.0V 2.0 V SHDN Input Current SHDN =VIN or GND -1 +1 μA TSHDN Thermal-Shutdown Temperature 160 ℃ ΔTSHDN Thermal-Shutdown Hysteresis 25 ℃ Line Regulation VOUT+1V≤VIN≤6.0V (2.5V≤VIN) IOUT=10mA 0.09 %/V Load Regulation VIN=VOUT+1V (2.5V≤VIN) 1mA≤IOUT≤500mA 0.2 % Output Voltage Noise 10Hz to 100kHz, CIN=1.0μF, IOUT=100mA Fixed Output, VOUT=1.0V 90 μVRMS Adjustable Output, VOUT=1.0V Adjustable Output, VOUT=3.3V 194 Adjustable Output, VOUT=5.0V 305 PSRR Power Supply Ripple Rejection VIN=VOUT+1V IOUT=10mA f=100Hz 65 dB f=1kHz 60 f=10kHz 45

http://www.union-ic.com Rev.05 Jan.2015 7/13 UM1770 Typical Characteristics (shown for 1.1V output option) (CIN=1.0μF, COUT = 1.0μF, TA = 25℃, unless otherwise specified.) VIN=6.0V Io=150mA VIN=2.5V VIN=2.5V, Io=5mA VIH VIL Quiescent Current vs Input Voltage Quiescent Current vs Temperature Output Voltage vs Input Voltage Output Voltage vs Output Current Output Voltage vs Temperature Enable Threshold Voltage vs Input Voltage

http://www.union-ic.com Rev.05 Jan.2015 8/13 UM1770 Typical Characteristics (shown for 1.1V output option) (Continued) (CIN=1.0μF, COUT = 1.0μF, TA = 25℃, unless otherwise specified.) VIN=3.3V, Io=100mA 100μV/div Noise=92μVrms 10ms/div Noise PSRR vs Frequency Io=10mA Dropout Voltage vs Output Current UM1770DA-00, Vout=1.0V, Io=100mA 200μV/div Noise=60µ Vrms 10ms/div Noise UM1770DA-00, Vout=3.3V, Io=100mA 500μV/div Noise=194µ Vrms 5ms/div Noise UM1770DA-00, Vout=5.0V, Io=100mA 500μV/div Noise=305µ Vrms 5ms/div Noise Vout≥2.5V

http://www.union-ic.com Rev.05 Jan.2015 9/13 UM1770 Typical Characteristics (shown for 1.1V output option) (Continued) (CIN=1.0μF, COUT = 1.0μF, TA = 25℃, unless otherwise specified.) VIN=3.3V, Io=50mA to 500mA 500mA/div 100mV/div 50μs/div IOUT VOUT VIN=3.3V to 4.3V, Io=500mA 2V/div 50mV/div 50μs/div VIN VOUT Line Transient Response VIN=2.5V, Rout=10Ω 2V/div 500mV/div 20μs/div Startup Waveform VEN VOUT VIN=2.5V, Rout=10Ω 2V/div 500mV/div 50μs/div VEN VOUT Shutdown Waveform Load Transient Response

http://www.union-ic.com Rev.05 Jan.2015 11/13 UM1770

Package Information

L R 0.200 E e b1b L c 8°(4X) D A Side View DIMENSIONS Symbol MILLIMETERS INCHES Min Max Min Max A 1.40 1.60 0.056 0.064 c 0.35 0.44 0.014 0.018 D 4.40 4.60 0.176 0.184 E 2.35 2.60 0.094 0.104 D1 1.40 1.83 0.056 0.073 b 0.35 0.54 0.014 0.022 b1 0.40 0.62 0.016 0.025 e 1.50TYP 0.060TYP L 0.65 1.10 0.026 0.044 Land Pattern 1.75 4×0.57 0.62 2×1.50 1.50 4.65 1.50 NOTES: 1. Compound dimension: 4.50×2.48; 2. Unit: mm; 3. General tolerance ± 0.05mm unless otherwise specified; 4. The layout is just for reference. Tape and Reel Orientation 1770-XX XX

http://www.union-ic.com Rev.05 Jan.2015 12/13 UM1770 UM1770DA-xx DFN6 2.0× 2.0 Outline Drawing D2/2 E2/2 e b L R 0.100 Bottom View A Side View D E Top View DIMENSIONS Symbol MILLIMETERS INCHES Min Typ Max Min Typ Max A3 0.15TYP 0.006TYP e 0.65TYP 0.026TYP Land Pattern 1.00 1.20 2.50 0.65 0.65 0.25 NOTES: 1. Compound dimension: 2.00×2.00； 2. Unit: mm; 3. General tolerance ± 0.05mm unless otherwise specified; 4. The layout is just for reference. Tape and Reel Orientation AXX M

http://www.union-ic.com Rev.05 Jan.2015 13/13 UM1770 IMPORTANT NOTICE The information in this document has been carefully reviewed and is believed to be accurate. Nonetheless, this document is subject to change without notice. Union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, or to notify a person or organization of any update. Union reserves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. Union Semiconductor, Inc Add: Unit 606, No.570 Shengxia Road, Shanghai 201210 Tel: 021-51093966 Fax: 021-51026018 Website: www.union-ic.com