SEAWARD ELECTRONICS INC.
1A Positive Voltage Regulators (Preliminary)
Features
Low Dropout Performance. Guaranteed 1A Output Current.
SE8117
Description
The SE8117 series of high performance low dropout voltage regulators are designed for applications that require efficient conversion and fast transient response.
Wide Input Supply Voltage Range. Over-temperature and Over-current Protection. Fixed or Adjustable Output Voltage. Rugged 3KV ESD withstand capability. Available in SOT-223 Packages.
Pin Configuration
Tab is Vout
1
2
3
Application
Adj/Gnd Out Front View In
Active SCSI Terminators. High Efficiency Linear Regulators. 5V to 3.3V Linear Regulators Motherboard Clock Supplies.
SOT-223
Ordering Information
Device SE8117TA SE8117TXX Package SOT-223 SOT-223 Output voltage is adjustable. XX denotes voltage options. Available voltages are 1.5V, 1.8V, 2.5V, 3.0V, and 3.3V. VOUT Volts
Absolute Maximum Rating
Symbol VIN θJC θJA TJ TSTG TLEAD Parameter Input Supply Voltage Thermal Resistance Junction to Case SOT-223 Thermal Resistance Junction to Ambient SOT-223 Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering 10 Sec) Maximum 9 15 156 0 to 125 -40 to 150 260 Units V °C/W °C/W °C °C °C
© Seaward Electronics, Inc., 2004. • www.seawardinc.com.cn • Tel: 0086-010-82895700 • Fax: 0086-010-82895706 Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China Preliminary and all contents are subject to change without prior notice. 1
SEAWARD ELECTRONICS INC.
1A Positive Voltage Regulators (Preliminary)
SE8117
Electrical Characteristic
VIN,MAX ≤ 8V, VIN,MIN – VOUT = 1.5V, IOUT = 10mA, CIN = 10µF, COUT = 22µF, TJ = 0 – 125°C, unless otherwise specified.
Symbol
Parameter
Test Condition 10mA ≤ IOUT ≤ 1A, TA = 25°C, SE8117T15
Min
Typ
Max
Units
1.5 (-2%) 1.8 2.5 3.0 3.3 1.225 (-2%) 1.250 0.3 0.4 9 48 1.275 (+2%) V % % mA µA µA V mA A %/°C °C %VO dB (+2%) V
VO
Output Voltage (1)
SE8117T18 SE8117T25 SE8117T30 SE8117T33
VREF VSR VLR IQ IADJ ∆IADJ VD IO ICL TC OTP VN RA
Notes: 1. 2.
Reference Voltage (1) (Adj. Voltage Version) Line Regulation (1) Load Regulation (1) Quiescent Current Adjust Pin Current Adjust Pin Current Change Dropout Voltage (2) Minimum Load Current Current Limit Temperature Coefficient Thermal Protection RMS Output Noise Ripple Rejection Ratio
10mA ≤ IOUT ≤ 1A IOUT = 10mA (VIN - VOUT) = 2V 10mA ≤ IOUT ≤ 1A
10mA ≤ IOUT ≤ 1A ∆VREF = 1%, IOUT = 1A
0.2 1.1 4 1.8 0.07 175
TA = 25°C, 10Hz ≤ f ≤ 10kHz f = 120Hz, COUT = 22µF (Tantalum), (VIN - VOUT) = 3V, IOUT = 1A
0.003 72
Low duty cycle pulse testing with which TJ remains unchanged. ∆VOUT, ∆VREF = 1%.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com.cn • Tel: 0086-010-82895700 • Fax: 0086-010-82895706 Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China Preliminary and all contents are subject to change without prior notice. 2
SEAWARD ELECTRONICS INC.
1A Positive Voltage Regulators (Preliminary)
SE8117
Typical Applications
Adjustable Voltage Regulator
VIN >= 3.0V
3
SE8117T15
2
VOUT = 1.5V
VREF CIN 10uF 1
R1 124 Ohm COUT 22uF
IADJ
R2 24.9 Ohm
Fixed Voltage Regulator
VIN >= 4.8V
3
SE8117T33
2
VOUT = 3.3V
CIN 10uF
1 IQ
COUT 22uF
© Seaward Electronics, Inc., 2004. • www.seawardinc.com.cn • Tel: 0086-010-82895700 • Fax: 0086-010-82895706 Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China Preliminary and all contents are subject to change without prior notice. 3
SEAWARD ELECTRONICS INC.
1A Positive Voltage Regulators (Preliminary)
SE8117
Typical Performance Characteristics
Reference Voltage vs Junction Temperature 1250 Reference Voltage (mV) 1245 1240 1235 1230 1225 1220 -25 0 25 50 75 100 125 150 Junction Temperature (C)
Line Transients
VIN = 4.5V – 5.5 V
CIN = 0.1µF, COUT = 1µF
Output Voltage vs Junction Temperature 3.70 3.65 3.60 Output Voltage 3.55 3.50 3.45 3.40 3.35 3.30 3.25 3.20 -25 0 25 50 75 100 125 150 Junction Temperature (C)
Load Transients
ILOAD = 10mA – 1A
COUT = 22µF, CIN = 10µF
D ropout Voltage vs Output Current 1.14 1.12 Dropout Voltage (V) 1.1 1.08 1.06 1.04 1.02 1 0 200 400 600 800 1000 Output Current (mA)
© Seaward Electronics, Inc., 2004. • www.seawardinc.com.cn • Tel: 0086-010-82895700 • Fax: 0086-010-82895706 Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China Preliminary and all contents are subject to change without prior notice. 4
SEAWARD ELECTRONICS INC.
1A Positive Voltage Regulators (Preliminary)
SE8117
Outline Drawing for SOT-223
© Seaward Electronics, Inc., 2004. • www.seawardinc.com.cn • Tel: 0086-010-82895700 • Fax: 0086-010-82895706 Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China Preliminary and all contents are subject to change without prior notice. 5
