UM1770 500mA, Micropower, VLDO Linear Regulator UM1770Y-xx SOT89-5 UM1770DA-xx DFN6 2.0×2.0 General Description The UM1770 series are VLDO (very low dropout) linear regulators designed for low power portable applications. Typical output noise is only 90μVRMS (Fixed Output, VOUT=1.0V) and maximum dropout is just 320mV at the load current of 500mA.The internal P-channel MOSFET pass transistor requires no base current, allowing the device to draw only 250μA during normal operation at the maximum load current of 500mA. Other features include high output voltage accuracy, excellent transient response, under voltage lockout, stability with ultra low ESR ceramic capacitors as small as 1μF, short-circuit and thermal overload protection and output current limiting. The UM1770Y-xx series are available in SOT89-5 package and the UM1770DA-xx series are available in a low profile DFN6 2.0×2.0 package. Applications 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 1/13 UM1770 Pin Configurations Top View SHDN 1 AXX NC GND NC VIN M (Top View) Marking PIN1 M: Month Code UM1770DA-xx DFN6 2.0×2.0 VOUT SHDN 1 AFJ FB GND NC VIN Marking PIN1 M: Month Code UM1770DA-00 DFN6 2.0×2.0 VOUT 4 5 5 VOUT NC 1 M (Top View) 1770-XX XX GND GND 2 1 SHDN 3 4 VIN 2 3 XX: Week Code UM1770Y-xx SOT89-5 4 5 5 VOUT FB 1 1770-00 XX GND GND 2 1 SHDN 3 4 VIN 2 3 XX: Week Code UM1770Y-00 SOT89-5 Pin Description Pin Number (Fixed VOUT) DFN6 SOT89-5 2.0×2.0 Pin Number (Adjustable VOUT) DFN6 SOT89-5 2.0×2.0 Symbol Function ___________ 1 3 1 3 2 2 2 2 GND Shutdown Input: High=Active LDO, Low=Shutdown LDO Ground 3 4 3 4 VIN Power Supply 4 5 4 5 VOUT 5, 6 1 5 - NC Not Connected - - 6 1 FB Output Voltage Feedback SHDN Voltage Regulated Output ________________________________________________________________________ http://www.union-ic.com Rev.05 Jan.2015 2/13 UM1770 Naming Information UM1770 - 00: Adjustable Output Voltage Fixed Output Voltage 10: 1.0V 11: 1.1V 12: 1.2V ∙∙∙∙∙∙ 40: 4.0V Package Type Y: SOT89-5 DA: DFN6 2.0×2.0 Ordering Information Part Number UM1770Y-00 UM1770Y-10 UM1770Y-11 UM1770Y-12 UM1770Y-13 UM1770Y-14 UM1770Y-15 UM1770Y-16 UM1770Y-17 UM1770Y-18 UM1770Y-19 UM1770Y-20 UM1770Y-21 UM1770Y-22 UM1770Y-23 UM1770Y-24 UM1770Y-25 UM1770Y-26 UM1770Y-27 UM1770Y-28 UM1770Y-29 UM1770Y-30 UM1770Y-31 UM1770Y-32 UM1770Y-33 UM1770Y-34 UM1770Y-35 UM1770Y-36 UM1770Y-37 UM1770Y-38 UM1770Y-39 UM1770Y-40 Output Voltage ADJ 1.0V 1.1V 1.2V 1.3V 1.4V 1.5V 1.6V 1.7V 1.8V 1.9V 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2.7V 2.8V 2.9V 3.0V 3.1V 3.2V 3.3V 3.4V 3.5V 3.6V 3.7V 3.8V 3.9V 4.0V Packaging Type SOT89-5 Marking Code 1770-00 1770-10 1770-11 1770-12 1770-13 1770-14 1770-15 1770-16 1770-17 1770-18 1770-19 1770-20 1770-21 1770-22 1770-23 1770-24 1770-25 1770-26 1770-27 1770-28 1770-29 1770-30 1770-31 1770-32 1770-33 1770-34 1770-35 1770-36 1770-37 1770-38 1770-39 1770-40 Shipping Qty 1000pcs/7Inch Tape & Reel ________________________________________________________________________ http://www.union-ic.com Rev.05 Jan.2015 3/13 UM1770 Ordering Information (Continued) Part Number UM1770DA-00 UM1770DA-10 UM1770DA-11 UM1770DA-12 UM1770DA-13 UM1770DA-14 UM1770DA-15 UM1770DA-16 UM1770DA-17 UM1770DA-18 UM1770DA-19 UM1770DA-20 UM1770DA-21 UM1770DA-22 UM1770DA-23 UM1770DA-24 UM1770DA-25 UM1770DA-26 UM1770DA-27 UM1770DA-28 UM1770DA-29 UM1770DA-30 UM1770DA-31 UM1770DA-32 UM1770DA-33 UM1770DA-34 UM1770DA-35 UM1770DA-36 UM1770DA-37 UM1770DA-38 UM1770DA-39 UM1770DA-40 Output Voltage ADJ 1.0V 1.1V 1.2V 1.3V 1.4V 1.5V 1.6V 1.7V 1.8V 1.9V 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2.7V 2.8V 2.9V 3.0V 3.1V 3.2V 3.3V 3.4V 3.5V 3.6V 3.7V 3.8V 3.9V 4.0V Packaging Type DFN6 2.0×2.0 Marking Code AFJ AAS AAT AAC AAD AAU AAJ AFE AFF AAK AFG AFH AFK AFL AFN AFP AAN AFQ AFR AAQ AFS AAR AFT AFU AAV AFV AAZ AFZ AGL AGN AGP AGQ Shipping Qty 3000pcs/7Inch Tape & Reel ________________________________________________________________________ http://www.union-ic.com Rev.05 Jan.2015 4/13 UM1770 Absolute Maximum Ratings (Note 1) Symbol VIN ___________ Parameter Supply Voltage on IN Pin ___________ Value Unit -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 Operating Junction Temperature (Notes 2, 3) -40 to +125 °C Storage Temperature Range -65 to +150 °C +300 °C TJ TSTG TL PD (Notes 4) θJA Lead Temperature for Soldering 10 seconds Power Dissipation@25°C Package Thermal Resistance DFN6 2.0×2.0 0.9 SOT89-5 1.5 DFN6 2.0×2.0 110 SOT89-5 66 W °C/W Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The UM1770 is tested and specified under pulse load conditions such that TJ≈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 protect the device during momentary overload conditions. Junction 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 allowable power dissipation of any TA (ambient temperature) is PDMAX = (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 5/13 UM1770 Electrical Characteristics Over recommended operating free-air temperature range (unless otherwise noted) Symbol Parameter VIN Input Voltage Range VUVLO Input Under Voltage Lockout IQ Operating Quiescent Current ___________ ISHDN IOUT Test Conditions VIN falling Typ Max Unit 2.5 6.0 V 1.8 2.4 V VIN=4.2V, IOUT=0mA 92 140 VIN=4.2V, IOUT=500mA 250 300 Shutdown Leakage Current Output Current 1 500 Output Voltage Accuracy 1mA≤IOUT≤500mA, TA=-25℃ ΔVDO Dropout Voltage IOUT=500mA，2.5V≤VOUT ILIMT Output Current Limit Startup Time Response VIN≥2.5V t Min μA mA -2 220 +2 % 320 mV 700 RL=68Ω, COUT=1μF μA mA μs 40 ___________ VIL SHDN Input Low Voltage 2.5V≤VIN≤6.0V 0.4 V ___________ VIH TSHDN ΔTSHDN SHDN Input High Voltage ___________ ___________ SHDN Input Current Thermal-Shutdown Temperature Thermal-Shutdown Hysteresis SHDN=VIN or GND Line Regulation Load Regulation Output Voltage Noise PSRR 2.5V≤VIN≤6.0V Power Supply Ripple Rejection VOUT+1V≤VIN≤6.0V (2.5V≤VIN) IOUT=10mA VIN=VOUT+1V (2.5V≤VIN) 1mA≤IOUT≤500mA Fixed Output, VOUT=1.0V Adjustable Output, 10Hz to VOUT=1.0V 100kHz, Adjustable CIN=1.0μF, Output, IOUT=100mA VOUT=3.3V Adjustable Output, VOUT=5.0V f=100Hz VIN=VOUT+1V f=1kHz IOUT=10mA f=10kHz 2.0 V -1 +1 μA 160 ℃ 25 ℃ 0.09 %/V 0.2 % 90 60 μVRMS 194 305 65 60 dB 45 ________________________________________________________________________ http://www.union-ic.com Rev.05 Jan.2015 6/13 UM1770 Typical Characteristics (shown for 1.1V output option) (CIN=1.0μF, COUT = 1.0μF, TA = 25℃, unless otherwise specified.) Quiescent Current vs Input Voltage Quiescent Current vs Temperature VIN=6.0V Output Voltage vs Input Voltage Io=150mA Output Voltage vs Temperature VIN=2.5V, Io=5mA Output Voltage vs Output Current VIN=2.5V Enable Threshold Voltage vs Input Voltage VIH VIL ________________________________________________________________________ http://www.union-ic.com Rev.05 Jan.2015 7/13 UM1770 Typical Characteristics (shown for 1.1V output option) (Continued) (CIN=1.0μF, COUT = 1.0μF, TA = 25℃, unless otherwise specified.) Dropout Voltage vs Output Current PSRR vs Frequency Vout≥2.5V Io=10mA Noise Noise UM1770DA-00, Vout=1.0V, Io=100mA VIN=3.3V, Io=100mA 100μV/div Noise=92μVrms 200μV/div Noise=60µVrms 10ms/div 10ms/div Noise Noise UM1770DA-00, Vout=3.3V, Io=100mA UM1770DA-00, Vout=5.0V, Io=100mA 500μV/div 500μV/div Noise=305µVrms Noise=194µVrms 5ms/div 5ms/div ________________________________________________________________________ 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.) Line Transient Response Load Transient Response VIN=3.3V to 4.3V, Io=500mA VIN=3.3V, Io=50mA to 500mA VIN IOUT 2V/div 500mA/div VOUT VOUT 100mV/div 50mV/div 50μs/div 50μs/div Startup Waveform Shutdown Waveform VIN=2.5V, Rout=10Ω VIN=2.5V, Rout=10Ω VEN VEN 2V/div 2V/div VOUT VOUT 500mV/div 20μs/div 500mV/div 50μs/div ________________________________________________________________________ http://www.union-ic.com Rev.05 Jan.2015 9/13 UM1770 Pin Function ___________ ___________ SHDN: Shutdown, Active Low. This pin is used to put the UM1770 into shutdown. The SHDN pin cannot be left floating and must be tied to the input pin if not used. GND: Ground and Heat Sink. Solder to a ground plane or large pad to maximize heat dissipation. VIN: Power for UM1770 and Load. Power is supplied to the devices through the IN pin. The IN pin should be locally bypassed to ground if the UM1770 series are more than a few inches away from another source of bulk capacitance. VOUT: Voltage Regulated Output. The OUT pin supplies power to the load. A minimum output capacitor of 1μF is required to ensure stability. Larger output capacitors may be required for applications with large transient loads to limit peak voltage transients. NC: Not Connected. FB: Output voltage feedback. This terminal is used to set the output voltage. Output Voltage Setting The output voltage of the UM1770 adjustable regulator is programmed using an external resistor divider as shown in Figure 2. The output voltage is calculated using: R1 VOUT VFB 1 R2 Where: VFB = 1.00V (Typ) (the internal reference voltage) Resistors R1 and R2 should be chosen for approximately 3-5μA divider current. Lower value resistors can be used but offer no inherent advantage and waste more power. Higher values should be avoided, as leakage currents at FB increase the output voltage error. The recommended design procedure is to choose R2 = 200kΩ to set the divider current at 5μA and then calculate R1 using: V R1 OUT 1 R 2 VFB Where: VFB = 1.00V (Typ). Typical Application Circuit VIN CIN 1μF VIN VOUT COUT 1μF VOUT Chip Enable SHDN GND Figure 1. Fixed Output Voltage Application Circuit VIN CIN 1μF VIN VOUT COUT 1μF VOUT R1 Chip Enable SHDN FB GND R2 Figure 2. Adjustable Output Voltage Application Circuit ________________________________________________________________________ http://www.union-ic.com Rev.05 Jan.2015 10/13 UM1770 Package Information UM1770Y-xx SOT89-5 0. 20 0 Outline Drawing c L R D1 E Symbol L 1 b b1 e Top View End View A 8°(4X) D A c D E D1 b b1 e L DIMENSIONS MILLIMETERS Min Max 1.40 1.60 0.35 0.44 4.40 4.60 2.35 2.60 1.40 1.83 0.35 0.54 0.40 0.62 1.50TYP 0.65 1.10 INCHES Min Max 0.056 0.064 0.014 0.018 0.176 0.184 0.094 0.104 0.056 0.073 0.014 0.022 0.016 0.025 0.060TYP 0.026 0.044 Side View Land Pattern 4×0.57 1.50 4.65 1.50 1.75 1 0.62 2×1.50 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 11/13 UM1770 UM1770DA-xx DFN6 2.0×2.0 Outline Drawing DIMENSIONS D2 D Symbol D2/2 Min Typ Max Min Typ Max 0.57 0.60 0.63 0.023 0.024 0.025 A1 0.00 0.03 0.05 0.000 0.001 0.002 E2/2 E2 L A3 b 1 e Top View Side View A3 A1 A Bottom View INCHES A R 0.100 E MILLIMETERS 0.15TYP 0.006TYP b 0.20 0.25 0.30 0.008 0.010 0.012 D 1.95 2.00 2.075 0.078 0.080 0.083 D2 1.45 1.55 1.65 0.058 0.062 0.066 E 1.95 2.00 2.075 0.078 0.080 0.083 E2 0.76 0.86 0.96 0.030 0.034 0.038 0.40 0.012 e L 0.65TYP 0.30 0.35 0.026TYP 0.014 0.016 0.65 1.00 1.20 2.50 Land Pattern 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 12/13 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 ________________________________________________________________________ http://www.union-ic.com Rev.05 Jan.2015 13/13