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SC8863 Dataheets PDF



Part Number SC8863
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description 150mA ULTRA LOW DROPOUT/ LOW NOISE REGULATOR
Datasheet SC8863 DatasheetSC8863 Datasheet (PDF)

150mA ULTRA LOW DROPOUT, LOW NOISE REGULATOR March 1, 2000 SC8863 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC8863 is a low dropout linear regulator that operates from a +2.5V to +5.5V input range and delivers up to 150mA. A PMOS pass transistor allows the low 110µA supply current to remain independent of load, making these devices ideal for battery operated portable equipment such as cellular phones, cordless phones and personal digital assistants. The SC88.

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150mA ULTRA LOW DROPOUT, LOW NOISE REGULATOR March 1, 2000 SC8863 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC8863 is a low dropout linear regulator that operates from a +2.5V to +5.5V input range and delivers up to 150mA. A PMOS pass transistor allows the low 110µA supply current to remain independent of load, making these devices ideal for battery operated portable equipment such as cellular phones, cordless phones and personal digital assistants. The SC8863 output voltage can be preset or adjusted with an external resistor divider. Other features include low powered shutdown, short circuit protection, thermal shutdown protection and reverse battery protection. The SC8863 comes in the tiny 5 lead SOT-23 package. FEATURES • Guaranteed 150 mA output current • Fixed or adjustable output • Very small external components • Low 75µVRMS output noise • Very low supply current • Thermal overload protection • Reverse battery protection • Low power shutdown • Surface mount packaging (5 pin SOT-23) • Full industrial temperature range APPLICATIONS • Battery Powered Systems • Cellular Telephones • Cordless Telephones • Personal Digital Assistants • Portable Instrumentation • Modems • PCMCIA cards ORDERING INFORMATION Part Number Package (1)(2) BLOCK DIAGRAM SC8863-XXXCSK SOT-23-5 Notes: (1) Where -XXX denotes voltage options. Available voltages are: 2.50V (-250), 2.80V (-280), 3.00V (-300), and 3.30 (-330)V. (2) Add suffix ‘TR’ for tape and reel. ABSOLUTE MAXIMUM RATINGS Parameter Input Supply Voltage Power Dissipation TA = 70°C Thermal Resistance Symbol VIN PD θJA θJC Maximum -0.6 to +7 571 256 81 -40 to +85 -40 to +150 -65 to +150 +300 1.25 Units V mW °C/W °C/W °C °C °C °C kV 1 © 2000 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 PIN CONFIGURATION Operating Ambient Temperature Range Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering) 10 Sec ESD Rating TA TJ TSTG TLEAD ESD 150mA ULTRA LOW DROPOUT, LOW NOISE REGULATOR March 1, 2000 SC8863 PIN DESCRIPTIONS Pin # 1 2 3 4 5 Pin Name EN GND IN OUT SET Description Active high enable pin. Connect to VIN if not being used. Ground pin. Can be used for heatsinking if needed. Input pin. Regulator output, sourcing up to 150mA Connecting this pin to ground results in the internally preset value for VOUT. Connecting to an external resistor divider changes VOUT to: R1   VOUT = 1 .250 •  1 +  R2   TYPICAL APPLICATION - INTERNALLY PRESET OUTPUT VOLTAGE U1 VIN > VOUT + VD(MAX) 3 VIN SC8863 VO 4 VOUT @ IOUT up to 150mA 1 C1 1uF Ceramic EN GND 2 SET 5 C2 1uF Ceramic TYPICAL APPLICATION - EXTERNALLY SET OUTPUT VOLTAGE U1 VIN > VOUT + VD(MAX) 3 VIN SC8863 VO 4 R1 1 EN GND 2 R2 10k SET 5 (1) VOUT @ IOUT up to 150mA C1 1uF Ceramic C2 2.2uF Ceramic NOTES: (1) Select R1 and R2 such that the current flowing through them is ≥ 10µA (i.e. R2 ≤ 120kΩ). A value of 10kΩ is recommended for R2. Please see Component Selection - .


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