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Description
The SE5167 is an efficient linear voltage regulator. It has extra low dropout voltage. At light loads the typical dropout voltage is 15mV, at full load the typical dropout voltage is 380mV. The output voltage accuracy is better than 2%. The SE5167 has low ground current at 65uA, so it can help prolong battery life. The SE5167 is specially designed for hand-held, battery-powered devices.
Features
Typical 175mV dropout voltage at 150mA. Low Ground current at 65uA. (Typ.) Guaranteed 300mA output over the full operating temperature range. Extremely tight load and line regulation. Low temperature coefficient. Current and thermal limiting. No-load stability. Available in SOT-23-3L and TO-92 Packages.
Applications
CD/DVD-ROM, CD/RW Wireless LAN card, Keyboard, Mouse Battery Powered Equipments PCMCIA Card
Ordering/Marking Information
Package Ordering Information 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V
Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 1
Marking Information SE5167AHN YYWW-LF SE5167BHN YYWW-LF SE5167CHN YYWW-LF SE5167DHN YYWW-LF SE5167EHN YYWW-LF SE5167FHN YYWW-LF SE5167AHG YYWW-LF SE5167BHG YYWW-LF SE5167CHG YYWW-LF SE5167DHG YYWW-LF SE5167EHG YYWW-LF SE5167FHG YYWW-LF
SE5167AHN-LF SE5167BHN-LF SE5167CHN-LF SE5167DHN-LF SE5167EHN-LF SE5167FHN-LF SE5167AHG-LF SE5167BHG-LF SE5167CHG-LF SE5167DHG-LF SE5167EHG-LF SE5167FHG-LF
YY: year code WW: week code. LF: lead free.
Ordering/Marking Information (Continued)
Package Ordering Information 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V SE5167ALN-LF SE5167BLN-LF SE5167CLN-LF SE5167DLN-LF SE5167ELN-LF SE5167FLN-LF SE5167ALG-LF SE5167BLG-LF SE5167CLG-LF SE5167DLG-LF SE5167ELG-LF SE5167FLG-LF 167AN_ 167BN_ 167CN_ 167DN_ 167EN_ 167FN_ 167AG_ 167BG_ 167CG_ 167DG_ 167EG_ 167FG_ Marking Information
Starting with 1, a bar on top of 1 is for production year 2001, and underlined 1 is for year 2002. The next character is marked on top for 2003, and underlined for 2004. The naming pattern continues with consecutive characters for later years. The last character is the week code. (A-Z:
1-26, a-z: 27-52)
A dot on top right corner is for lead-free process. LF: lead free.
Revision
12/5/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 2
Absolute Maximum Ratings(1)
Supply Input Voltage (VIN) ..............................+6V Power Dissipation (PD) ........... Internally Limited
(3)
Operating Ratings(2)
Supply Input Voltage (VIN) .............. +2.8V to +6V Junction Temperature (TJ) ............ 0C to +125C Package Thermal Resistance 160C/W (TO-92) 250C/W (SOT-23-3L)
Junction Temperature (TJ) .............. 0C to +125C Lead Temperature (soldering, 5 sec.) ........... 260C Storage Temperature (TS) ........... -40C to +150C
Electrical Characteristics
VIN = 5V; CIN = 2.2F; COUT = 2.2FElectrolytic capacitor; IOUT = 10mA; TJ = 25C, unless otherwise specified. Symbol Parameter Conditions SE5167 - 1.5V(VIN=1.8V,IOUT=1mA) SE5167 - 1.8V(VIN=3.3V,IOUT=10mA) VOUT Output Voltage Accuracy SE5167-2.5V SE5167-2.8V SE5167-3.0V SE5167-3.3V Output Voltage VOUT /T Temperature Coefficient VOUT / VOUT VOUT / VOUT Line Regulation Load Regulation(5) VIN = (VOUT+0.8)V or 2.5V to 5.5V VIN = (VOUT+0.8)V or 2.5V IOUT =1mA to 300mA IOUT =10mA VIN - VOUT Dropout Voltage
(6)
Min 1.470 1.764 2.450 2.744 2.940 3.234
Typ 1.5 1.8 2.5 2.8 3.0 3.3
Max 1.530 1.836 2.550 2.856 3.060 3.366
Units
V
Note 4
--
0.025
--
mV/
-----------
1.0 1.0 15 175 380 150 20 59 65 600
-----------
%/V %
IOUT =150mA IOUT =300mA
mV
TPROTECTION PSRR IGROUND ILIMIT
Thermal Protection Ripple Rejection Ground Current Current Limit
Thermal Protection Temperature Protection Hysterisys f =120Hz IOUT =10mA VOUT =0V

dB uA mA
Revision
12/5/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 3
Note 1: Exceeding the absolute maximum rating may damage the device. Note 2: The device is not guaranteed to function outside its operating rating. Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(MAX) = (TJ(MAX) - TA)/JA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. See Table 1 and the "Thermal Considerations" section for details. Note 4: Output voltage temperature coefficient is the worst-case voltage change divided by the total temperature range. Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range from 100A to 300mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Note 6: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. Note 7: The Cin or Cout should be chosen carefully. Please refer to the Application Hints
Typical Application
Revision
12/5/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 4
Line Regulation (VOUT = 3.3V)
(VIN = 4.3V to 6V, IOUT = 1mA)
3.6000
3.600
Load Regulation (VOUT = 3.3V)
(VIN = 5V, IOUT = 1mA to 500mA)
3.5000
3.500
3.4000
3.400
VOUT (V)
3.3000
VOUT (V)
3.300
3.2000
3.200
3.1000
3.100
3.0000 4.2 4.7 5.2 5.7
3.000 0 100 200 300 400 500
VIN (V)
IOUT (mA)
Output Voltage vs Temperature
(VIN = 5V, IOUT = 10mA)
3.330 3.320 3.310
100 160 140 120
IQ vs IOUT (VOUT = 3.3V)
(VIN = 5V, IOUT = 10mA to 500mA)
VOUT (V)
3.300 3.290 3.280 3.270 0 20 40 60 80 100 120
IQ (uA)
80 60 40 20 0
Temperature (C)
0
100
200
300
400
500
IOUT (mA)
Transient Response (VOUT = 1.5V) PSRR (VOUT = 3.3)
(VIN = 5V, VPP = 1V)
70
(IOUT = 1mA to 150mA)
60
50
PSRR (dB)
40
30
20
10
0 100 1000 10000
Frequency (Hz)
Revision
12/5/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 5
Application Hints
Like any Low dropout regulator, SE5167 requires external capacitors to ensure stability. The external capacitors must be carefully selected to ensure the performances.
Thermal Consideration
It is important that the thermal limit of the package should not be exceeded. The SE5167 has built-in thermal protection. When the thermal limit is exceeded, the IC will enter protection, and the VOUT will be reset to zero. The power dissipation for a given application can be calculated as follows: The Power Dissipation (PD) is PD = IOUT * [VIN - VOUT] The thermal limit of the package is then limited to PD(MAX) = [TJ - TA]/JA where TJ is the junction temperature, TA is ambient temperature, and JA is around 250C/W for SE5167. SE5167 is designed to enter thermal protection at 150C. For example, if TA is 25C then the max PD is limited to about 0.5W. In other words, if IOUT(MAX) = 300mA, then [VIN - VOUT] can not exceed 1.67V.
Input Capacitor: An Input Capacitor of at least 2.2uF is required. The inexpensive Electrolytic capacitor is preferred. The value can be increased without upper limit.
Output Capacitor: An Output Capacitor is required for look stability. It must be located no more than 1cm away from the VOUT pin, and connected directly between VOUT and GND pins. The inexpensive Electrolytic capacitor is recommended. The minimum value is 2.2uF but once again its value can be increased without limit.
Revision
12/5/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 6
OUTLINE DRAWING SOT-23-3L (SC-59)
C J B H
DIM A B C D E F G H J K L
N
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.110 0.047 0.083 0.035 0.070 0.018 0.015 0.0005 0.034 0.003 0.120 0.055 0.104 0.040 0.080 0.024 0.020 0.004 0.040 0.007 0.027 2.80 1.20 2.10 0.89 1.78 0.45 0.37 0.013 0.887 0.085 3.04 1.40 2.64 1.03 2.05 0.60 0.51 0.10 1.02 0.18 0.69
D A E
F
G
K
L
OUTLINE DRAWING TO-92
A
B D
DIMN A B E F G H J K
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.175 0.170 0.500 0.016 0.045 0.095 0.080 0.125 0.205 0.210 0.610 0.021 0.055 0.105 0.105 0.165 4.445 4.318 12.70 0.407 1.143 2.413 2.032 3.175 5.207 5.334 15.50 0.533 1.397 2.667 2.667 4.191
E
G F H K
J
Revision
12/5/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 7
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 - 12/5/2008
Revision
12/5/2008 Preliminary and all contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 8

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