Anpec APL1541-33KC-TR 1a low dropout fast response positive adjustable regulator and fixed 3.3v Datasheet

APL1541
1A Low Dropout Fast Response Positive Adjustable Regulator and Fixed 3.3V
Features
General Description
•
•
•
The APL1541 is a low dropout three-terminal adjustable regulators with 1A output current capability. In
order to obtain lower dropout voltage and faster transient response, which is critical for low voltage applications , the APL1541 has been optimized.
Guaranteed Output Voltage Accuracy within 2%
Fast Transient Response
Guaranteed Dropout Voltage at Multiple Currents
•
•
•
•
•
•
•
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 supply below 12V. Dropout voltage is guaranteed at a
maximum of 1.3V at 1A.
Load Regulation : 0.1% Typ.
Line Regulation : 0.03% Typ.
Low Dropout Voltage : 1.1V Typ. at IOUT =1A
Current Limit : 1A Typ. at TJ=125 °C
Current limit is trimmed to ensure specified output
current and controlled short-circuit current. On-chip
thermal limiting provides protection against any combination of overload that would create excessive junction temperatures.
On-Chip Thermal Limiting : 150 °C Typ.
Adjustable Output : 1.25~7.75V
Standard 8-pin SO Power Package
The APL1541 is available in the industry standard 8pin SO power package which can be used in applications where space is limited.
Applications
•
•
•
•
Pin Description
Peripheral Cards
Active SCSI Terminators
Low Voltage Logic Supplies
NC
1
ADJ/GND
2
8
VOUT
7
VOUT
Post Regulator for Switching Power Supply
APL1541-33
VIN
3
6
VOUT
NC
4
5
VOUT
Front View for SO - 8
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
1
www.anpec.com.tw
APL1541
Ordering and Marking Information
P ac k a g e C od e
K : S O P -8
T e m p. R ang e
C : 0 to 70 ° C
H andlin g C o de
T U : T u be
T R : T a pe & R eel
V oltage C od e
33 : 3.3V
B lank : A djus table V e rs ion
Le ad F ree C ode
L : L e a d F re e D e vic e
B la nk : O rigin a l D ev ic e
A P L1 54 1 Le ad F ree C ode
H andlin g C o de
T e m p. R ang e
P ac k ag e C od e
V oltage C od e
A P L1 541-
A P L1 541
XX XX X
A P L1 541- 33 :
XX XX X - D a te C ode
A P L1 541
XX XX X3 3
XX XX X - D a te C ode
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
13.2
V
°C
VI
Input Voltage
TJ
TSTG
Operating Junction Temperature Range
Control Section
Power Transistor
Storage Temperature Range
0 to 125
0 to 150
-65 to +150
°C
TL
Lead Temperature (Soldering, 10 second)
260
°C
Electrical Characteristics
Symbol
VREF
VOUT
REG LINE
REG LOAD
VD
Parameter
Test Conditions
Min.
APL1541
Typ.
Max.
Unit
Reference Voltage 10mA≤ IOUT ≤1A, 1.4V≤(VIN -VOUT) ≤9.75V,
APL1541 TJ =0~125°C
1.225
1.250
1.275
V
Output Voltage
TJ =0~125°C,
APL1541-33 0≤ IOUT≤ 1A, 4.75V≤VIN≤12V,
3.235
3.300
3.365
V
0.03
1
0.2
6
%
mV
0.1
1
0.4
10
%
mV
1
1.05
1.1
1.1
1.2
1.3
V
Line Regulation
TJ =0~125°C
APL1541 IOUT=10mA, 1.5V≤(VIN -VOUT) ≤9.75V, (note1)
APL1541-33 IOUT=0A, 4.75V≤(VIN -VOUT) ≤7.75V, (note 1)
Load Regulation TJ =0~125°C
APL1541 (VIN -VOUT)=3V, 0≤ IOUT ≤1A ,(note 1)
APL1541-33 VIN=4.75V, 0≤ IOUT ≤1A ,(note 1)
Dropout Voltage IOUT=100mA ,TJ =0~125°C
IOUT=500mA ,TJ =0~125°C
IOUT=1A ,TJ =0~125°C
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
2
www.anpec.com.tw
APL1541
Electrical Characteristics Cont.
Symbol
ILIMIT
Parameter
Current Limit
Test Conditions
(VIN -VOUT)=5V, TJ=25°C
Adjust Pin Current (VIN -VOUT)=3V, IOUT=10mA, TJ=0~125°C
IADJ
APL1541
Adjust Pin Current TJ=0~125°C, 10mA≤ IOUT ≤1A,
∆IADJ Change
1.4V≤(VIN -VOUT) ≤9.75V
APL1541
Minimum Load
Current
IO
TJ=0~125°C, (VIN -VOUT)=9.75V, (note 3)
APL1541
Ripple Rejection FRIPPLE=120Hz, VRIPPLE=1VP-P,
PSRR
(VIN -VOUT)=3V, TJ=0~125°C
Thermal
TR
TJ=25°C, 30ms Pulse
Regulation
Temperature
TS
Stability
Long -Term
LS
TJ =125°C,1000Hrs.
Stability
RMS Output
TJ=25°C,10Hz≤F≤10kHz,
VN
Noise
(% of VOUT)
Thermal
Junction to Case, at Tab
θth
Resistance
Junction to ambient
Quiescent Current TJ=0~125°C,
Iq
APL1541-33 VIN≤12V
Min.
1
APL1541
Typ.
Max.
Unit
A
60
120
0.2
5
µA
µA
1.7
60
mA
75
0.01
dB
0.02
0.5
%/ W
%
0.3
%
0.003
%
15
50
°C/ W
5.5
10
mA
Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Load line regulations are measured at a constant junction temperature by low duty cycle pulse testing.
Note 2: Dropout voltage is specified over the full output current range of the device. Dropout voltage is defined as the minimum input/
output differential measured at the specified output current. Test points and limits are also shown on the Dropout Voltage curve.
Note 3: Minimum load current is defined as the minimum output current required to maintain regulation.
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
3
www.anpec.com.tw
APL1541
Application Circuits
Simple 5V to 3.3V Regulation
1.25V to 7.75V Adjustable Regulator
AP L1541
A P L 1 5 4 1 -3 3
V IN = 5 V
IN
V IN
V O U T = 3 .3 V
OUT
IN
R1
121Ω
ADJ
GND
10uF
V OUT
OUT
10uF
C 1*
10uF
100uF
C 2*
R2
1K
*Needed if device is far from filter capacitors
VOUT = 1.250V x
5V Regulator with Shutdown
Improving Ripple Rejection
AP L1541
A P L1541
V IN
10uF
IN
R1+R2
R1
OUT
V IN
VOUT
R1
121Ω
ADJ
ADJ
121Ω
1%
100uF
365Ω
1%
TTL
C1
10uF
5V
OUT
10uF
1K
150uF
R2
365Ω
1%
IN
1K
*C1 improves ripple rejection.XC should be approximately
equal to R1 at ripple frequency
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
4
www.anpec.com.tw
APL1541
Typical Characteristics
Load Transietn Response
Line Transient Response
APL1541-33
5
0.02
APL1541-33
6
0.15
4.5
5
0.01
0.1
3.5
3
Input Voltage (V)
Output Current (A)
4
0
2.5
CIN=10µF
COUT=10µF Tantalum
V IN=5V
2
1.5
-0.01
-0.02
1
0.5
0
-100
100
300
500
-0.03
900
700
4
CIN=10µF
COUT=10µF Tantalum
IOUT=0.1A
3
2
0
1
0
-20
30
Time (µS)
80
-0.05
180
130
Time (µS)
Dropout Voltage vs. Output Current
Output Voltage vs. Input Voltage
APL1541-33
1.25
3.5
1.2
3
1.15
2.5
Output Voltage (V)
Dropout Voltage (V)
0.05
1.1
1.05
1
APL1541-33
2
1.5
1
0.5
0.95
0
0.9
0
0.2
0.4
0.6
0.8
0
1
Output Current (A)
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
1
2
3
4
5
6
7
8
9
Input Voltage (V)
5
www.anpec.com.tw
APL1541
Typical Characteristics Cont.
Current Limit vs. Input Voltage
Input Current vs. Input Voltage
APL1541-33
APL1541-33
6
2.4
2.2
Current Limit (A)
Input Current (mA)
5
4
3
2
1
2
1.8
1.6
1.4
1.2
0
1
0
2
4
6
8
10
12
5
7
9
11
13
Input Voltage (V)
Input Voltage (V)
Output Voltage vs. Temperature
Adjustable Pin Current vs. Temperature
APL1541-33
3.4
APL1541-Adj
70
Adjustable Pin Current (µA)
Output Voltage (V)
68
3.3
3.2
3.1
3
-50
-25
0
25
50
75
100
64
62
60
58
56
54
52
50
-50
125
Temperature (°C)
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
66
-25
0
25
50
75
100
125
Temperature (°C)
6
www.anpec.com.tw
APL1541
Typical Characteristics Cont.
Current Limit vs. Temperature
Input Current vs. Tmeperature
APL1541-33
8
APL1541-33
1.9
1.8
Current Limit (A)
Input Current (mA)
7
6
5
4
1.7
V IN-V OUT =5V
1.6
1.5
1.4
1.3
1.2
3
1.1
2
-50
1
-25
0
25
50
75
100
125
-50
Temperature (°C)
0
50
100
150
Temperature (°C)
PSRR vs. Frequency
APL1541-Adj
+0 Cadj=22µF
-10 IOUT=0.1A
Vripple=1Vp-p
-20
PSRR (dB)
-30
-40
-50
-60
VIN-VOUT>=Vdropout
-70
-80
-90
-100
10 20
V IN-VOUT>=3V
50 100 200 500 1k 2k
5k 10k 20k
50k 200k
Frequency (Hz)
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
7
www.anpec.com.tw
APL1541
Application Information
Output Voltage
The APL1541 develops a 1.25V reference voltage between the output and the adjust terminal. By placing
a resistor between these two terminals, a constant
Current is caused to flow through R1 and down through
R2 to set the overall output voltage. Normally this
current is chosen to be the specified minimum load
current of 10mA. For fixed voltage devices R1 and R2
are included in the device.
APL1541
IN
OUT
ADJ
V IN
R1
RL
CONNECT
R1 TO CASE
R2
V OUT
V REF
Figure 2. Connections for Best Load Regulation
R1
Input Capacitor
R2
R2
)+I A D J R 2
R1
An input capacitor of 10µF or greater is recommended.
Tantalum, or aluminum electrolytic capacitors can be
Figure 1. Basic Adjustable Regulator
used for bypassing. Larger Values will improve ripple
Load Regulation
rejection by bypassing the input to the regulator.
When the adjustable regulator is used. Load regula-
Output Capacitor
tion will be limited by the resistance of the wire connecting the regulator to the load. The data sheet speci-
The APL1541 requires an output capacitor to main-
fication for load regulation is measured at the output
tain stability and improve transient response. Proper
pin of the device. Best load regulation is obtained
capacitor selection is important to ensure proper
when the top of the resistor divider (R1) is tied directly
operation. The APL1541 output capacitor selection
to the output pin of the device, not to the load. For
is dependent upon the ESR (equivalent series
fixed voltage devices the top of R1 is internally con-
resistance) of the output capacitor to maintain stability.
nected to the output, and the ground pin can be con-
When the output capacitor is 10uF or greater, the out-
nected to low side of the load. If R1 were connected
put capacitor should have an ESR less than 1Ω.This
to the load, RP is multiplied by the divider ratio, the
will improve transient response as well as promote
effective resistance between the regulator and the load
stability. A low-ESR solid tantalum capacitor works
would be:
Rp X (1+
APL1541
IN
OUT
ADJ
CONNECT
R2 TO LO AD
I ADJ
60 µ A
V O U T = V R E F (1+
V IN
Rp
P A R A S IT IC
L IN E R E S IS T A N C E
extremely well and provides good transient response
R2
), Rp = Parasitic Line Resistance
R1
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
and stability over temperature.
8
www.anpec.com.tw
APL1541
Application Information (Cont.)
Output Capacitor (Cont.)
PD = (VIN - VOUT) x IOUT
Maximum junction temperature is equal to :
Aluminum electrolytics can also be used, as long as
the ESR of the capacitor is <1Ω. The value of the
TJUNCTION = TAMBIENT + (PD x θJA)
output capacitor can be increased without limit. Higher
Note: TJUNCTION must not exceed 125°C
capacitance values help to improve transient response
and ripple rejection and reduce output noise.
Ripple Rejection
The curves for Ripple Rejection were generated using
an adjustable device with the adjust pin bypassed.
With a 22µF bypassing capacitor 75dB ripple rejection is obtainable at any output level. The impedance
of the adjust pin capacitor, at the ripple frequency,
should be < R1. R1 is normally in the range of 100Ω200Ω. The size of the required adjust pin capacitor is
a function of the input ripple frequency. At 120Hz,
with R1=100Ω, the adjust pin capacitor should be
13µF. For fixed voltage devices, and adjustable devices without an adjust pin capacitor, the output ripple
will increase as the ratio of the output voltage to the
reference voltage (VOUT /VREF ).
Thermal Considerations
APL1541 has thermal protection which limits junction
temperature to 150°C. However, device functionality
is only guaranteed to a maximum junction temperature of +125°C. The thermal resistance for each application will be affected by thermal interactions with
other components on the board. Some experimentation will be necessary to determine the actual value.
The power dissipation of APL1541 is equal to :
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
9
www.anpec.com.tw
APL1541
Packaging Information
E
e1
0.015X45
SOP-8 pin ( Reference JEDEC Registration MS-012)
H
e2
D
A1
1
L
0.004max.
Dim
A
Mi ll im et er s
Inche s
A
Min.
1. 35
Max .
1. 75
Min.
0. 053
Max .
0. 069
A1
D
E
0. 10
4. 80
3. 80
0. 25
5. 00
4. 00
0. 004
0. 189
0. 150
0. 010
0. 197
0. 157
H
L
e1
e2
5. 80
0. 40
0. 33
6. 20
1. 27
0. 51
0. 228
0. 016
0. 013
0. 244
0. 050
0. 020
φ 1
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
1. 27B S C
0. 50B S C
8°
8°
10
www.anpec.com.tw
APL1541
Physical Specifications
Terminal Material
Lead Solderability
Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb), 100%Sn
Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3.
Reflow Condition
(IR/Convection or VPR Reflow)
tp
TP
C ritical Z one
T L to T P
T e m p e ra tu re
R am p-up
TL
tL
T sm ax
T sm in
R am p-down
ts
Preheat
25
t 25 °C to Peak
T im e
Classificatin Reflow Profiles
Profile Feature
Sn-Pb Eutectic Assembly
Large Body
Small Body
Average ramp-up rate
3°C/second max.
(TL to TP)
Preheat
- Temperature Min (Tsmin)
100°C
- Temperature Mix (Tsmax)
150°C
- Time (min to max)(ts)
60-120 seconds
Tsmax to TL
- Ramp-up Rate
Tsmax to TL
- Temperature(TL)
183°C
- Time (tL)
60-150 seconds
Peak Temperature(Tp)
225 +0/-5°C
240 +0/-5°C
Time within 5°C of actual Peak
10-30 seconds
10-30 seconds
Temperature(tp)
Ramp-down Rate
6°C/second max.
6 minutes max.
Time 25°C to Peak Temperature
Pb-Free Assembly
Large Body
Small Body
3°C/second max.
150°C
200°C
60-180 seconds
3°C/second max
217°C
60-150 seconds
245 +0/-5°C
250 +0/-5°C
10-30 seconds
20-40 seconds
6°C/second max.
8 minutes max.
Note: All temperatures refer to topside of the package. Measured on the body surface.
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
11
www.anpec.com.tw
APL1541
Reliability test program
Test item
SOLDERABILITY
HOLT
PCT
TST
ESD
Latch-Up
Method
MIL-STD-883D-2003
MIL-STD-883D-1005.7
JESD-22-B, A102
MIL-STD-883D-1011.9
MIL-STD-883D-3015.7
JESD 78
Description
245°C , 5 SEC
1000 Hrs Bias @ 125 °C
168 Hrs, 100 % RH , 121°C
-65°C ~ 150°C, 200 Cycles
VHBM > 2KV, VMM > 200V
10ms , Itr > 100mA
Carrier Tape
t
D
P
Po
E
P1
Bo
F
W
Ko
Ao
D1
T2
J
C
A
B
T1
Application
SOP- 8
A
B
330 ± 1
F
5.5± 1
J
T1
T2
W
P
E
62 +1.5
C
12.75+
0.15
2 ± 0.5
12.4 ± 0.2
2 ± 0.2
12± 0. 3
8± 0.1
1.75±0.1
D
D1
Po
P1
Ao
Bo
Ko
t
2.0 ± 0.1
6.4 ± 0.1
5.2± 0. 1
2.1± 0.1
.3±0.013
1.55 +0.1 1.55+ 0.25 4.0 ± 0.1
(mm)
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
12
www.anpec.com.tw
APL1541
Cover Tape Dimensions
Application
SOP- 8
Carrier Width
12
Cover Tape Width
9.3
Devices Per Reel
2500
Customer Service
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 City, Taipei Hsien, Taiwan, R. O. C.
Tel : 886-2-89191368
Fax : 886-2-89191369
Copyright  ANPEC Electronics Corp.
Rev. A.2 - Oct., 2003
13
www.anpec.com.tw
Similar pages