APL1541-33KC-TR ANPEC [Anpec Electronics Coropration], APL1541-33KC-TR Datasheet

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APL1541-33KC-TR

Manufacturer Part Number
APL1541-33KC-TR
Description
1A Low Dropout Fast Response Positive Adjustable Regulator and Fixed 3.3V
Manufacturer
ANPEC [Anpec Electronics Coropration]
Datasheet
Peripheral Cards
Active SCSI Terminators
Low Voltage Logic Supplies
Post Regulator for Switching Power Supply
Guaranteed Output Voltage Accuracy within 2%
Fast Transient Response
Guaranteed Dropout Voltage at Multiple Cur-
Load Regulation : 0.1% Typ.
Line Regulation : 0.03% Typ.
Low Dropout Voltage : 1.1V Typ. at I
Current Limit : 1A Typ. at T
On-Chip Thermal Limiting : 150 C Typ.
Adjustable Output : 1.25~7.75V
Standard 8-pin SO Power Package
rents
J
=125 C
OUT
=1A
The APL1541 is a low dropout three-terminal adjust-
able regulators with 1A output current capability. In
order to obtain lower dropout voltage and faster tran-
sient response, which is critical for low voltage ap-
plications , the APL1541 has been optimized.
The device is available in an adjustable version and
fixed output voltages of 3.3V, the output available
voltage range is from 1.25~7.75V with an input sup-
ply below 12V. Dropout voltage is guaranteed at a
maximum of 1.3V at 1A.
Current limit is trimmed to ensure specified output
current and controlled short-circuit current. On-chip
thermal limiting provides protection against any com-
bination of overload that would create excessive junc-
tion temperatures.
The APL1541 is available in the industry standard 8-
pin SO power package which can be used in appli-
cations where space is limited.
ADJ/GND
V
NC
NC
IN
Front View for SO - 8
1
2
3
4
APL1541-33
8
7
6
5
V
V
V
V
OUT
OUT
OUT
OUT

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APL1541-33KC-TR Summary of contents

Page 1

... Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting provides protection against any com- bination of overload that would create excessive junc- tion temperatures. The APL1541 is available in the industry standard 8- pin SO power package which can be used in appli- cations where space is limited. NC ADJ/GND ...

Page 2

... J APL1541 REG I = LINE OUT APL1541- OUT Load Regulation T =0~125 C J APL1541 REG (V LOAD IN APL1541-33 V =4.75V Dropout Voltage I =100mA ,T OUT V I =500mA ,T D OUT I =1A ,T OUT ang ree C ode ...

Page 3

... C OUT J -V =3V, I =10mA, T =0~125 C ) OUT OUT J 0~125 C, 10mA I 1A, OUT -V 9.75V ) IN OUT -V )=9.75V, (note 3) IN OUT =120Hz, V =1V RIPPLE P-P, -V =3V, T =0~125 C ) OUT J ) OUT 12V APL1541 Unit Min. Typ. Max 120 0.01 0. 0.5 % 0.3 % 0.003 % 5.5 10 ...

Page 4

Simple 5V to 3.3V Regulation Improving Ripple Rejection ...

Page 5

... Time ( S) Dropout Voltage vs. Output Current 1.25 1.2 1.15 1.1 1.05 1 0.95 0.9 0 0.2 0.4 0.6 Output Current (A) Line Transient Response 0. -0.01 2 -0.02 1 -0.03 0 900 -20 Output Voltage vs. Input Voltage APL1541-33 0.8 1 APL1541-33 0.15 0 =10 F Tantalum OUT I =0.1A OUT 0.05 0 -0. 130 180 Time ( S) APL1541-33 Input Voltage (V) ...

Page 6

... Input Voltage (V) Output Voltage vs. Temperature Temperature (°C) Current Limit vs. Input Voltage APL1541-33 2.4 2.2 2 1.8 1.6 1.4 1 Adjustable Pin Current vs. Temperature APL1541- -50 -25 APL1541- Input Voltage (V) APL1541-Adj 100 125 Temperature (°C) ...

Page 7

... OUT Vripple= -20 -30 -40 -50 - >=Vdropout IN OUT -70 -80 - -100 50 100 200 500 10k 20k 50k 10 20 Frequency (Hz) Current Limit vs. Temperature APL1541-33 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 100 125 -50 APL1541-Adj >=3V OUT 200k APL1541- =5V IN OUT 0 50 100 150 Temperature (°C) ...

Page 8

... Tantalum, or aluminum electrolytic capacitors can be used for bypassing. Larger Values will improve ripple rejection by bypassing the input to the regulator. The APL1541 requires an output capacitor to main- tain stability and improve transient response. Proper capacitor selection is important to ensure proper operation. The APL1541 output capacitor selection is dependent upon the ESR (equivalent series resistance) of the output capacitor to maintain stability ...

Page 9

... The thermal resistance for each ap- plication will be affected by thermal interactions with other components on the board. Some experimenta- tion will be necessary to determine the actual value. The power dissipation of APL1541 is equal ...

Page 10

SOP-8 pin ( Reference JEDEC Registration MS-012 0.004max. Dim Min ...

Page 11

Terminal Material Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb), 100%Sn Lead Solderability Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3. (IR/Convection or VPR Reflow Profile Feature Average ramp-up ...

Page 12

Test item SOLDERABILITY MIL-STD-883D-2003 HOLT MIL-STD-883D-1005.7 PCT JESD-22-B, A102 TST MIL-STD-883D-1011.9 ESD MIL-STD-883D-3015.7 Latch-Up JESD Application A B 330 1 62 +1.5 SOP 5.5 1 1.55 +0.1 1.55+ 0.25 4.0 Method 245 ...

Page 13

Application Carrier Width 12 SOP- 8 Anpec Electronics Corp. Head Office : 5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien ...

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