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Description
The SE8119C series of high performance low dropout voltage regulators are designed for applications that require efficient conversion and fast transient response.
Features
Low Dropout Performance. Guaranteed 800mA Output Current. Wide Input Supply Voltage Range. Over-temperature and Over-current Protection. Rugged 3KV ESD withstand capability. Available in SOT-89-3L and SOT-223-3L
Top view
Pin Configuration
Packages.
Application
PC-Camera
1 2 3
Active SCSI Terminators. High Efficiency Linear Regulators. 5V to 3.3V Linear Regulators Motherboard Clock Supplies.
SOT-89
Typical Application Adjustable Voltage Regulator
VIN>=3V
Ordering Information
SE8119C _ _ _ PIN (1=>3): 1. G: OUT/GND/IN
COUT 22uF
P3
SE8119C-ADJ
P1
P2
VOUT=1.5V R1 124 R2 24.9
VREF
CIN 10uF IADJ
2. N: GND/IN/OUT 3. T: GND/OUT/IN Package Type: 1. K: SOT-89-3L 2. S: SOT-223-3L
VOUT =VREF (1+
R2
R1
)+IADJR2
Output Voltage: A: VOUT = 3.3V ADJ: Adjustable Output
Fixed Voltage Regulator
VIN>=4.8V
P3
SE8119C-3.3V
P1
IO
P2
VOUT=3.3V
CIN 10uF
COUT 22uF
Revision 12/4/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 1
Absolute Maximum Rating
Symbol VIN TJ TSTG TLEAD Input Supply Voltage Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering 10 Sec) Parameter Maximum 9 0 to 125 -40 to 150 260 Units V C C C
Electrical Characteristic
VIN,MAX 8V, VIN,MIN - VOUT = 1.5V, IOUT = 10mA, CIN = 10F, COUT = 22F, TJ = 0 - 125C, unless otherwise specified.
Symbol VO VREF VSR VLR IQ IADJ IADJ VD IO VICL TC OTP VN RA
Parameter Output Voltage (1) 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
Test Condition SE8119-3.3 (VIN - VOUT) = 1.5V IOUT = 10mA VOUT + 1.5V < VIN < 8V IOUT = 10mA (VIN - VOUT) = 1.5V 10mA IOUT 800mA
Min 3.234 (-2%) -----
Typ 3.3
Max 3.366
Units V V % % mA A A V mA A %/C C %VO dB
1.250 (+2%) 0.3 0.4 3 65 14 1.3 4 1.0 0.07 175 0.003 35 -------------
VOUT + 1.5V < VIN < 8V 10mA IOUT 1A IOUT = 800mA
-------
TA = 25C, 10Hz f 10kHz f = 120Hz, COUT = 22F (Tantalum), (VIN - VOUT) = 3V, IOUT = 50mA
---
Notes: 1. 2. Low duty cycle pulse testing with which TJ remains unchanged. VOUT = 1%.
Revision 12/4/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 2
Application Hints
Like any linear voltage regulator, SE8119C requires external capacitors to ensure stability. The external capacitors must be carefully selected to ensure performance.
Thermal Considerations
It is important that the thermal limit of the package is not exceeded. thermal protection. The SE8119C has built-in When the thermal limit is
exceeded, the IC will enter protection, and VOUT will be pulled to ground. The power dissipation for a given application can be calculated as following: The power dissipation (PD) is PD = IOUT * [VIN - VOUT] It The thermal limit of the package is then limited to PD(MAX) = [TJ - TA]/JA where TJ is the junction temperature, TA is the ambient temperature, and JA is around 150C/W for SE8119C. SE8119C is designed to enter thermal protection at 175C. For example, if TA is 25C then the maximum PD is limited to about 1.0W. In other words, if IOUT = 500mA, then [VIN - VOUT] can not exceed 2V.
Input Capacitor
An input capacitor of at least 10F is required. Ceramic or Tantalum can be used. can be increased without upper limit. The value
Output Capacitor
An output capacitor is required for stability. must be placed no more than 1 cm away from the VOUT pin, and connected directly between VOUT and GND pins. The minimum value is 22F but may be increased without limit.
Revision 12/4/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 3
Output Voltage VS. Junction Temperature
3.40
Dropout Voltage VS. Output Current 1.30 Dropout Voltage (V) 1.25 1.20 1.15 1.10 1.05 1.00
-25 0 25 50 75 100 125 150
3.35
Output Voltage
3.30 3.25 3.20 3.15 3.10
Junction Temperature (C)
0
200
400 Output Current (mA)
600
800
Line Transients
VIN = 4.5V - 5.5 V
Load Transients
ILOAD = 10mA - 0.5A
CIN = 0.1F, COUT =1F
COUT = 22F, CIN = 10F
Revision 12/4/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 4
Outline Drawing for SOT-89-3L
DIM
SOT-89
A C D K L M J
N
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.173 0.181 0.159 0.167 0.067 0.075 0.051 0.059 0.094 0.102 0.035 0.047 0.118REF 0.059REF 0.016 0.020 0.055 0.063 0.014 0.016 10TYP 0.028REF 4.400 4.600 4.050 4.250 1.700 1.900 1.300 1.500 2.400 2.600 0.890 1.200 3.00REF 1.50REF 0.400 0.520 1.400 1.600 0.350 0.410 10TYP 0.70REF
H
G I
A B C D E F G H I J K L M
B
Customer Support
Seaward Electronics Incorporated - China Section B, 2nd Floor, ShangDi Scientific Office Complex, #22 XinXi Road Haidian District, Beijing 100085, China Tel: 86-10-8289-5700/01/05 Fax: 86-10-8289-5706 Seaward Electronics Corporation - Taiwan 2F, #181, Sec. 3, Minquan East Rd, Taipei, Taiwan R.O.C Tel: 886-2-2712-0307 Fax: 886-2-2712-0191 Seaward Electronics Incorporated - North America 1512 Centre Pointe Dr. Milpitas, CA95035, USA Tel: 1-408-821-6600 Last Updated - 12/4/2008
Revision 12/4/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 5
F
E

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