UM17735 UNIONSEMI | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 7
Technical content
Features
z Bluetooth/802.11 Cards z PDAs and Notebook Computers z Portable Instruments and Battery-Powered Systems z Cellular Phones z Very Low Dropout: 400mV(max) at 500mA z Maximum Input Voltage: 6.0V z Low Noise:75μVRMS (10Hz to 100kHz) z ±2.5%Voltage Accuracy at 500mA z Fast Transient Response z Under Voltage Lockout z Fixed Output Voltage: 1.2V z Output Current Limit z Reverse-Battery Protection z No Protection Diodes Needed z Stable with 1μF Output Capacitor z Short-Circuit and Thermal Overload Protection z Low Profile QFN2020-6 Package P i n C o n f i g u r a t i o n s T o p V i e w UM177XX M: Month Code QFN2020-6
http://www.union-ic.com Rev.01 Sep.2010 2 / 7 UM177XX
Ordering Information
Part Number Output Voltage Packaging Type Marking Code Shipping Qty UM17735 3.5V AAZ UM17733 3.3V AAV UM17730 3.0V AAR UM17728 2.8V AAQ UM17725 2.5V AAN UM17718 1.8V AAK UM17715 1.5V AAJ UM17713 1.3V AAD UM17712 1.2V QFN2020-6 AAC 3000pcs/7Inch Tape & Reel Pin Description Pin Number Symbol Function
1 SHDN
Shutdown Input, Active Low
2 GND Ground
3 VIN Power Supply
4 VOUT Voltage Regulated Output
5 NC Not Connected
6 NC Not Connected
Absolute Maximum Ratings (Note 1) Symbol Parameter Value Unit VIN Supply Voltage on IN Pin -7.5 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 Output Short-Circuit Duration Indefinite TJ Operating Junction Temperature (Notes 2, 3) -40 to +125 °C TSTG Storage Temperature Range -65 to +150 °C TL Lead Temperature for Sold ering 10 seconds +300 °C Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The UM177XX is tested and specifi ed under pulse load conditions such that T J≈TA. The device is guaranteed to meet pe rformance specifications from 0 ℃ to 70 ℃ . 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 overtemperature protec tion that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125 ℃ when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability.
http://www.union-ic.com Rev.01 Sep.2010 3 / 7 UM177XX
Electrical Characteristics
Over recommended operating free-air temperature range (unless otherwise noted) Symbol Parameter Test Conditions Min Typ Max Unit VIN Input Voltage Range VOUT+ VDROP 6.0 V VUVLO Input Under Voltage Lockout* VIN falling 2.0 2.6 V VIN=5.0V,IOUT=0mA 90 IQ Operating Quiescent Current VIN=5.0V,IOUT=500mA 100 μA ISHDN Shutdown Leakage Current 1 μA ESD Rating Human Body Mode 2 KV IOUT Output Current 500 mA 1mA≤IOUT≤150mA, TA=+25℃ -1 +1 1mA≤IOUT≤150mA, TA=-40℃ to +85℃ -2 +2 Output Voltage Accuracy 1mA≤IOUT≤500mA, ΔVDO Dropout Voltage I OUT=500mA 250 400 mV ILIMT Output Current Limit V IN≥2.5V 700 mA Input Reverse Leakage Current (OUT to IN Leakage Current) VIN=4V, VOUT=5.5V chip active 0.01 1.5 μA t Startup Time Response RL=68Ω, COUT=1μF 20 μs VIL SHDN Input Low Voltage 0.3×V IN V VIH SHDN Input High Voltage 0.7×V IN V SHDN Input Current SHDN =VIN or GND -1 0.1 +1 μA TSHDN Thermal-Shutdown Temperature 160 ℃ ΔTSHDN Thermal-Shutdown Hysteresis 20 ℃ Line Regulation VOUT+1V≤VIN≤VOUT+2V IOUT=10mA 0.09 %/V Load Regulation VIN=VOUT+1V 1mA≤IOUT≤150mA 0.2 % Output Voltage Noise 10Hz to 100KHz CIN=0.1μF, IOUT=10mA 75 μVR MS F=100Hz 70 F=1KHz 65 F=10KHz 50 PSRR Power Supply Ripple Rejection VIN=VOUT+1V IOUT=100mA F=100KHz 40 dB *Only UM17735/UM17733/UM17730/UM17728/UM17725 has this function.
http://www.union-ic.com Rev.01 Sep.2010 4 / 7 UM177XX Typical Characteristics (shown for 3.3 V output option) ( CIN=1.0uF, COUT = 1.0 uF, TA = 25℃ unless otherwise specified.) 3.200 3.225 3.250 3.275 3.300 3.325 3.350 3.375 3.400 Figure1. Output Voltage Vs. Input Voltage IO=500mA Output Voltage(V) Input Voltage(V) 0 50 100 150 200 250 300 350 400 450 500 100 150 200 250 300 350 Figure2. Dropout Voltage Vs. Output Current Dropout Voltage(mV) Output Current(mA) 0 50 100 150 200 250 300 350 400 450 500 3.200 3.225 3.250 3.275 3.300 3.325 3.350 3.375 3.400 Figure4. Output Voltage Vs. Output Current Output Voltage(V) Output Current(mA) VIN=4.2V - 4 0 - 3 0 - 2 0 - 1 00 1 02 03 04 05 06 07 08 09 0 3.15 3.20 3.25 3.30 3.35 ILOAD=500mA VIN=4.2V Figure3. Output Voltage Vs. Temperature Output Voltage(V) Temperature( o
http://www.union-ic.com Rev.01 Sep.2010 5 / 7 UM177XX Pin Function SHDN (Pin 1): Shutdown, Active Low. This pin is used to put the UM177XX into shutdown. The SHDN pin cannot be left floating and must be tied to the input pin if not used. GND (Pin 2) : Ground and Heat Sink. Solder to a ground plane or large pad to maximize heat dissipation. VIN (Pin 3): Power for UM177XX and Load. Power is supplied to the devices through the IN pin. The IN pin should be locally bypassed to gro und if the UM177XX series are more than a few inches away from another source of bulk capacitan ce. In general, the output impedance of a battery rises with frequency, so it is usually a dvisable to include an input bypass capacitor in battery-powered circuits. A cap acitor in the range of 0.1 μF to 1 μF is usually sufficient. The UM177XX series are designed to withstand reverse voltages on the IN pin with respect to both ground and the output pin. In the case of a reve rsed input, which can happen if a battery is plugged in backwards, the UM177XX will act as if ther e is a large resistor in series with its input with only a small amount of current flow. VOUT (Pin 4): V oltage Regulated Output. The OUT pin supplies power to the load. A minimum output capacitor of 1 μF is required to ensure stability. Larg er output capacitors may be required for applications with large transient loads to lim it peak voltage transients. See the Applications Information section for more information on output capacitance. NC (Pin 5，6): Not Connected. Typical Application Circuit
http://www.union-ic.com Rev.01 Sep.2010 6 / 7 UM177XX
Package Information
UM177XX: QFN2020-6 Outline Drawing DIMENSIONS MILLIMETERS Symbol Min Typ Max A 0.57 0.60 0.63 A1 0 0.03 0.05 A3 0.15TYP b 0.20 0.25 0.30 D 1.95 2.00 2.075 E 1.95 2.00 2.075 D2 1.45 1.55 1.65 E2 0.76 0.86 0.96 e 0.65TYP L 0.30 0.35 0.40 Land Pattern NOTES: 1. Compound dimension: 2.0×2.0； 2. Unit: mm; 3. General tolerance ±0.05mm unless otherwise specified; 4. The layout is just for reference. Tape and Reel Orientation
http://www.union-ic.com Rev.01 Sep.2010 7 / 7 UM177XX IMPORTANT NOTICE The information in this document has been ca refully reviewed and is believed to be accurate. Nonetheless, this document is subjec t 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 rese rves 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: 2F, No. 3, Lane 647 Songtao Road, Shanghai 201203 Tel: 021-51093966 Fax: 021-51026018 Website: www.union-ic.com