ANPEC APL5940KAI-TRG

APL5940
4A, Ultra Low Dropout (0.30V Typical) Linear Regulator
Features
General Description
•
•
The APL5940 is a 4A ultra low dropout linear regulator.
The IC needs two supply voltages, one is a control voltage
Compatible with APL5913
Ultra Low Dropout
(VCNTL) for the control circuitry, the other is a main supply
voltage (VIN) for power conversion, to reduce power dissi-
- 0.30V(typical) at 4A Output Current
•
Low ESR Output Capacitor (Multi-Layer Chip Ca
pation and provide extremely low dropout voltage.
The APL5940 integrates many functions. A Power-On-
pacitors (MLCC)) Applicable
•
•
0.8V Reference Voltage
Reset (POR) circuit monitors both supply voltages on
VCNTL and VIN pins to prevent erroneous operations.
High Output Accuracy
- ±1.5% over Line, Load, and Temperature Range
•
•
•
The functions of thermal shutdown and current-limit protect the device against thermal and current over-loads. A
Fast Transient Response
POK indicates the output voltage status with a delay time
set internally. It can control other converter for power
Adjustable Output Voltage
Power-On-Reset Monitoring on Both VCNTL and
sequence. The APL5940 can be enabled by other power
systems. Pulling and holding the EN voltage below 0.4V
VIN Pins
•
•
•
•
•
•
•
•
Inernal Soft-Start
shuts off the output.
The APL5940 is available in a SOP-8P package which
Current-Limit and Short Current-Limit Protections
Thermal Shutdown with Hysteresis
Open-Drain VOUT Voltage Indicator (POK)
features small size as SOP-8 and an Exposed Pad to
reduce the junction-to-case resistance to extend power
Low Shutdown Quiescent Current (<30 µA)
range of applications.
Shutdown/Enable Control Function
Applications
Simple SOP-8P Package with Exposed Pad
Lead Free and Green Devices Available
•
•
•
(RoHS Compliant)
Pin Configuration
Front Side Bus VTT
NoteBook PC Applications
Motherboard Applications
Simplified Application Circuit
VCNTL
GND
FB
VOUT
VOUT
8
7
6
5
1
2
3
4
EN
POK
VCNTL
VIN
VIN
VCNTL
VIN
POK
POK
SOP-8P (Top View)
VOUT
VOUT
APL5940
= Exposed Pad
(connected to VIN plane for better heat dissipation)
EN
Enable
EN
GND
FB
Optional
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.1 - Jul., 2009
1
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APL5940
Ordering and Marking Information
Package Code
KA : SOP-8P
Operating Ambient Temperature Range
I : -40 to 85 oC
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APL5940
Assembly Material
Handling Code
Temperature Range
Package Code
APL5940
XXXXX
APL5940 KA :
XXXXX - Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020C for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Absolute Maximum Ratings
Symbol
VIN
(Note 1)
Parameter
VIN Supply Voltage (VIN to GND)
VCNTL
VCNTL Supply Voltage (VCNTL to GND)
VOUT
VOUT to GND Voltage
POK to GND Voltage
EN, FB to GND Voltage
PD
Power Dissipation
TJ
Maximum Junction Temperature
TSTG
TSDR
Storage Temperature
Maximum Lead Soldering Temperature, 10 Seconds
Rating
Unit
-0.3 ~ 4.0
V
-0.3 ~ 7
V
-0.3 ~ VIN +0.3
V
-0.3 ~ 7
V
-0.3 ~ VCNTL +0.3
V
3
W
150
o
-65 ~ 150
o
260
o
C
C
C
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Thermal Characteristics
Symbol
θJA
θJC
Parameter
Typical Value
Junction-to-Ambient Resistance in Free Air (Note 2)
SOP-8P
Junction-to-Case Resistance in Free Air (Note 3)
SOP-8P
Unit
42
o
18
o
C/W
C/W
Note 2: θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. The exposed pad
of SOP-8P is soldered directly on the PCB.
Note 3: The “Thermal Pad Temperature” is measured on the PCB copper area connected to the thermal pad of package.
1
2
3
4
8
VIN
7
6
5
Measured Point
PCB Copper
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
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APL5940
Recommended Operating Conditions
Symbol
VCNTL
VIN
Parameter
VOUT Output Voltage (when VCNTL-VOUT>1.9V)
IOUT
VOUT Output Current
ESRCOUT
TA
TJ
Unit
V
1.2 ~ 3.65
V
0.8 ~ VIN – VDROP
V
VIN Supply Voltage
VOUT
COUT
Range
3.0 ~ 5.5
VCNTL Supply Voltage
VOUT Output Capacitance
Continuous Current
0~4
Peak Current
A
0 ~ 4.5
IOUT = 4A at 25% nominal VOUT
8 ~ 600
IOUT = 3A at 25% nominal VOUT
8 ~ 1100
IOUT = 2A at 25% nominal VOUT
8 ~ 1700
IOUT = 1A at 25% nominal VOUT
8 ~ 2400
µF
ESR of VOUT Output Capacitor
0 ~ 200
Ambient Temperature
-40 ~ 85
o
-40 ~ 125
o
Junction Temperature
mΩ
C
C
Electrical Characteristics
Unless otherwise specified, these specifications apply over VCNTL=5V, VIN=1.8V, VOUT= 1.2V and TA= -40 ~ 85 oC. Typical values are
at TA=25oC.
Symbol
Parameter
Test Conditions
APL5940
Min.
Typ.
Max.
Unit
SUPPLY CURRENT
IVCNTL
ISD
VCNTL Supply Current
EN = VCNTL, IOUT=0A
-
1.0
1.5
mA
VCNTL Supply Current at Shutdown
EN = GND
-
15
30
µA
VIN Supply Current at Shutdown
EN = GND, VIN=3.65V
-
-
1
µA
2.5
2.7
2.9
V
-
0.4
-
V
0.8
0.9
1.0
V
-
0.5
-
V
-
0.8
-
V
-1.5
-
+1.5
%
-
0.06
0.25
%
- 0.15
-
+ 0.15
%/V
-
85
-
Ω
-100
-
100
nA
TJ=25oC
-
0.33
0.38
TJ=-40~125oC
-
-
0.49
TJ=25oC
-
0.31
0.36
TJ=-40~125oC
-
-
0.47
POWER-ON-RESET (POR)
Rising VCNTL POR Threshold
VCNTL POR Hysteresis
Rising VIN POR Threshold
VIN POR Hysteresis
OUTPUT VOLTAGE
VREF
Reference Voltage
FB=VOUT
Output Voltage Accuracy
VCNTL=3.0 ~ 5.5V, IOUT= 0~4A,
TJ= -40~125oC
Load Regulation
IOUT=0 ~4A
Line Regulation
IOUT=10mA, VCNTL= 3.0 ~ 5.5V
VOUT Pull-low Resistance
VCNTL=3.3V, VEN=0V, VOUT<0.8V
FB Input Current
VFB=0.8V
DROPOUT VOLTAGE
VOUT=2.5V
VDROP
VIN-to-VOUT Dropout Voltage
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
VCNTL=5.0V
, IOUT=4A
VOUT=1.8V
3
V
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APL5940
Electrical Characteristics (Cont.)
Unless otherwise specified, these specifications apply over VCNTL=5V, VIN=1.8V, VOUT= 1.2V and TA= -40 ~ 85 oC. Typical values
are at T A=25oC.
Symbol
Parameter
Test Conditions
APL5940
Unit
Min.
Typ.
Max.
TJ=25oC
-
0.30
0.35
TJ=-40~125oC
-
-
0.45
TJ=25oC
4.7
5.7
6.7
TJ= -40 ~ 125oC
4.2
-
-
-
1.1
-
A
0.6
1.5
-
ms
-
170
-
o
50
-
o
0.5
0.8
1.1
V
-
0.1
-
V
-
5
-
µA
0.3
0.6
1.2
ms
90
92
94
%
-
8
-
%
DROPOUT VOLTAGE (CONT.)
VDROP
ILIM
VIN-to-VOUT Dropout Voltage
Current-Limit Level
VCNTL=5.0V,
VOUT=1.2V
IOUT=4A
V
A
PROTECTIONS
ISHORT
TSD
Short Current-Limit Level
VFB<0.2V
Short Current-Limit Blanking
Time
From beginning of soft-start
Thermal Shutdown Temperature
TJ rising
Thermal Shutdown Hysteresis
-
C
C
ENABLE AND SOFT-START
EN Logic High Threshold Voltage
VEN rising
EN Hysteresis
EN Pull-High Current
TSS
EN=GND
Soft-Start Interval
POWER-OK AND DELAY
VTHPOK
Rising POK Threshold Voltage
VFB rising
POK Threshold Hysteresis
POK Pull-low Voltage
POK sinks 5mA
-
0.25
0.4
V
POK Debounce Interval
VFB<falling POK voltage threshold
-
10
-
µs
POK Delay Time
From VFB =VTHPOK to rising edge of the VPOK
1
2
4
ms
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
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APL5940
Typical Operating Characteristics
Current-Limit vs. Junction
Temperature
Short Current-Limit vs. Junction
Temperature
6.5
1.20
Current-Limit, ILIM (A)
6.0
Short Current-Limit, ISHORT (mA)
VOUT = 1.2V
VCNTL = 5V
5.5
5.0
VCNTL = 3.3V
4.5
4.0
3.5
1.18
1.16
1.14
1.10
1.08
-25
0
25
50
75
100
VCNTL = 3.3V
1.06
1.04
1.02
1.00
-50
VCNTL = 5V
1.12
125
-50
-25
Junction Temperature (oC)
50
75
100
125
Dropout Voltage vs. Output Current
450
VCNTL = 5V
VOUT = 1.2V
400
Dropout Voltage, VDROP (mV)
450
Dropout Voltage, VDROP (mV)
25
Junction Temperature (oC)
Dropout Voltage vs. Output Current
TJ = 125°
C
350
TJ = 75°
C
300
TJ = 25°
C
250
200
150
TJ = 0°
C
100
TJ = - 40°
C
50
TJ = 125°
C
VCNTL = 3.3V
VOUT = 1.2V
400
TJ = 75°
C
350
TJ = 25°
C
300
250
200
150
TJ = 0°
C
100
TJ = - 40°
C
50
0
0
0
0.5
1
1.5
2
2.5
3
3.5
4
0
0.5
Output Current, IOUT (A)
1
1.5
2
2.5
3
3.5
4
Output Current, I OUT (A)
Dropout Voltage vs. Output Current
Dropout Voltage vs. Output Current
400
400
TJ = 125°
C
VCNTL = 5V
VOUT = 1.5V
350
Dropout Voltage, VDROP (mV)
Dropout Voltage, VDROP (mV)
0
TJ = 75°
C
300
TJ = 25°
C
250
200
150
TJ = 0°
C
100
TJ = - 40°
C
50
TJ = 125°
C
VCNTL = 5V
350 VOUT = 1.8V
TJ = 75°
C
300
TJ = 25°
C
250
200
150
TJ = 0°
C
100
TJ = - 40°
C
50
0
0
0
0.5
1
1.5
2
2.5
3
3.5
4
0
Output Current, I OUT (A)
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
0.5
1
1.5
2
2.5
3
3.5
4
Output Current, I OUT (A)
5
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APL5940
Typical Operating Characteristics (Cont.)
Reference Voltage vs. Junction
Temperature
Dropout Voltage vs. Output Current
0.808
TJ = 125°
C
VCNTL = 5V
400
VOUT = 2.5V
350
Reference Voltage, VREF (V)
Dropout Voltage, VDROP (mV)
450
TJ = 75°
C
300
TJ = 25°
C
250
200
150
TJ = 0°
C
TJ = - 40°
C
100
0.806
0.804
0.802
0.800
0.798
0.796
0.794
50
0.792
-50
0
0
0.5
1
1.5
2
2.5
3
3.5
4
-25
VIN Power Supply Rejection Ratio
(PSRR)
Power Supply Rejection Ratio (dB)
Power Supply Rejection Ratio (dB)
-30
-40
-50
10000
75
100
125
0
VCNTL=5V
VIN=1.8V
VINPK-PK=100mV
VOUT=1.2V
IOUT=3A
CIN=10µF
COUT=10µF
-60
1000
50
VCNTL Power Supply Rejection Ratio
(PSRR)
0
-20
25
Junction Temperature (°
C)
Output Current, IOUT (A)
-10
0
100000
-20
VCNTL=4.6~5.4V
VIN=1.8V
VOUT=1.2V
IOUT=3A
CIN=COUT=10µF
-30
-40
-50
-60
-70
1000
1000000
Frequency (Hz)
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
-10
10000
100000
1000000
Frequency (Hz)
6
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APL5940
Operating Waveforms
Refer to the typical application circuit. The test condition is VIN=1.8V, VCNTL=5V, VOUT=1.2V, TA= 25oC, unless otherwise specified.
Power On
Power Off
VCNTL
VCNTL
1
1
VIN
VIN
2
2
VOUT
VOUT
3
3
VPOK
VPOK
4
4
COUT=10µF, CIN=10µF, RL=0.4Ω
CH1: VCNTL, 5V/Div, DC
CH2: VIN, 1V/Div, DC
CH3: VOUT, 1V/Div, DC
CH4: VPOK, 5V/Div, DC
TIME: 2ms/Div
COUT=10µF, CIN=10µF, RL=0.4Ω
CH1: VCNTL, 5V/Div, DC
CH2: VIN, 1V/Div, DC
CH3: VOUT, 1V/Div, DC
CH4: VPOK, 5V/Div, DC
TIME: 2ms/Div
Load Transient Response
Over Current Protection
VOUT
VOUT
1
1
IOUT
IOUT
2
4
IOUT=10mA to 4A to 10mA (rise / fall time = 1µs)
COUT=10µF, CIN=10µF
CH1: VOUT, 50mV/Div, AC
CH2: IOUT, 2A/Div, DC
TIME: 50µs/Div
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
COUT=10µF, CIN=10µF, IOUT= 2A to 5.6A
CH1: VOUT, 0.5V/Div, DC
CH4: IOUT, 2A/Div, DC
TIME: 0.2ms/Div
7
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APL5940
Operating Waveforms (Cont.)
Refer to the typical application circuit. The test condition is VIN=1.8V, VCNTL=5V, VOUT=1.2V, TA= 25oC, unless otherwise specified.
Enable
Shutdown
VEN
VEN
1
1
VOUT
VOUT
2
2
VPOK
VPOK
3
3
IOUT
IOUT
4
4
COUT=10µF, CIN=10µF, RL=0.4Ω
CH1: VEN, 5V/Div, DC
CH2: VOUT, 0.5V/Div, DC
CH3: VPOK, 5V/Div, DC
CH4: IOUT, 2A/Div, DC
TIME: 0.5ms/Div
COUT=10µF, CIN=10µF, RL=0.4Ω
CH1: VEN, 5V/Div, DC
CH2: VOUT, 1V/Div, DC
CH3: VPOK, 5V/Div, DC
CH4: IOUT, 2A/Div, DC
TIME: 2µs/Div
Pin Description
PIN
FUNCTION
NO.
NAME
1
GND
2
FB
Voltage Feedback Pin. Connecting this pin to an external resistor divider receives the feedback voltage
of the regulator.
3,4
VOUT
Output pin of the regulator. Connecting this pin to load and output capacitors (10µF at least) is required
for stability and improving transient response. The output voltage is programmed by the resistor-divider
connected to FB pin. The VOUT can provide 4A (max.) load current to loads. During shutdown, the
output voltage is quickly discharged by an internal pull-low MOSFET.
5
VIN
Main supply input pin for voltage conversions. A decoupling capacitor (≥10µF recommended) is usually
connected near this pin to filter the voltage noise and improve transient response. The voltage on this
pin is monitored for Power-On-Reset purpose.
6
VCNTL
Bias voltage input pin for internal control circuitry. Connect this pin to a voltage source (+5V
recommended). A decoupling capacitor (1µF typical) is usually connected near this pin to filter the
voltage noise. The voltage at this pin is monitored for Power-On-Reset purpose.
7
POK
Power-OK signal output pin. This pin is an open-drain output used to indicate the status of output
voltage by sensing FB voltage. This pin is pulled low when output voltage is not within the Power-OK
voltage window.
8
EN
Active-high enable control pin. Applying and holding the voltage on this pin below the enable voltage
threshold shuts down the output. When re-enabled, the IC undergoes a new soft-start process. When
leave this pin open, an internal pull-up current (5µA typical) pulls the EN voltage and enables the
regulator.
Exposed
Pad
-
Ground pin of the circuitry. All voltage levels are measured with respect to this pin.
Connect this pad to system VIN plane for good thermal conductivity.
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
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APL5940
Block Diagram
VCNTL
Thermal
Shutdown
VCNTL
PowerOn-Reset
(POR)
POR
5µA
EN
Enable
0.8V
Control Logic
and
Soft-Start
POR
Enable
Soft-Start
POK
VIN
PWOK
VREF
0.8V
VOUT
Error Amplifier
ISEN
Delay
Current-Limit
and
Short CurrentLimit
90%
VREF
GND
FB
Typical Application Circuit
VCNTL
(+5V is preferred)
CCNTL
1µF
6
VIN
+1.8V
R3
5.1kΩ
7
POK
CIN
10µF
VCNTL
VIN
POK
VOUT
5
3,4
VOUT
+1.2V / 4A
COUT
10µF
APL5940
EN
8
EN
FB
2
(X5R/X7R Recommended)
GND
Enable
1
R2
24kΩ
R1
12kΩ
C1
Optional
(X5R/X7R Recommended)
10µF: GRM31MR60J106KE19 Murata
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
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APL5940
Function Description
Power-On-Reset
Thermal Shutdown
A Power-On-Reset (POR) circuit monitors both of supply
voltages on VCNTL and VIN pins to prevent wrong logic
A thermal shutdown circuit limits the junction temperature of APL5940. When the junction temperature exceeds
+170oC, a thermal sensor turns off the output NMOS, al-
controls. The POR function initiates a soft-start process
after both of the supply voltages exceed their rising POR
lowing the device to cool down. The regulator regulates
the output again through initiation of a new soft-start pro-
voltage thresholds during powering on. The POR function also pulls low the POK voltage regardless the output
cess after the junction temperature cools by 50oC, resulting in a pulsed output during continuous thermal over-
status when one of the supply voltages falls below its
load conditions. The thermal shutdown is designed with
a 50oC hysteresis to lower the average junction tempera-
falling POR voltage threshold.
Internal Soft-Start
ture during continuous thermal overload conditions, extending lifetime of the device.
An internal soft-start function controls rise rate of the output voltage to limit the current surge during start-up. The
For normal operation, the device power dissipation should
be externally limited so that junction temperatures will
typical soft-start interval is about 0.6 ms.
not exceed +125oC.
Output Voltage Regulation
Enable Control
An error amplifier works with a temperature-compensated 0.8V reference and an output NMOS regulates
The APL5940 has a dedicated enable pin (EN). A logic
output to the preset voltage. The error amplifier is designed with high bandwidth and DC gain provides very
low signal applied to this pin shuts down the output. Following a shutdown, a logic high signal re-enables the
fast transient response and less load regulation. It compares the reference with the feedback voltage and ampli-
output through initiation of a new soft-start cycle. When
left open, this pin is pulled up by an internal current source
(5µA typical) to enable normal operation. It’s not neces-
fies the difference to drive the output NMOS which provides load current from VIN to VOUT.
sary to use an external transistor to save cost.
Current-Limit Protection
Power-OK and Delay
The APL5940 monitors the current flowing through the
output NMOS and limits the maximum current to prevent
The APL5940 indicates the status of the output voltage by
monitoring the feedback voltage (VFB) on FB pin. As the
load and APL5940 from damages during current over-
VFB rises and reaches the rising Power-OK voltage threshold (VTHPOK), an internal delay function starts to work. At
load conditions.
the end of the delay time, the IC turns off the internal
NMOS of the POK to indicate that the output is ok. As the
Short Current-Limit Protection
V FB falls and reaches the falling Power-OK voltage
threshold, the IC turns on the NMOS of the POK (after a
The short current-limit function reduces the current-limit
level down to 1.1A (typical) when the voltage on FB pin
debounce time of 10µs typical).
falls below 0.2V (typical) during current overload or shortcircuit conditions.
The short current-limit function is disabled for successful start-up during soft-start interval.
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
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APL5940
Application Information
Power Sequencing
Ultra-low-ESR capacitors (such as ceramic chip capacitors) and low-ESR bulk capacitors (such as solid
The power sequencing of VIN and VCNTL is not necessary to be concerned. However, do not apply a voltage to
tantalum, POSCap, and Aluminum electrolytic capacitors)
can all be used as an input capacitor of VIN. For most
VOUT for a long time when the main voltage applied at
VIN is not present. The reason is the internal parasitic
applications, the recommended input capacitance of VIN
is 10µF at least. However, if the drop of the input voltage
diode from VOUT to VIN conducts and dissipates power
without protections due to the forward-voltage.
is not cared, the input capacitance can be less than 10µF.
More capacitance reduces the variations of the supply
Output Capacitor
voltage on VIN pin.
The APL5940 requires a proper output capacitor to maintain stability and improve transient response. The output
Setting Output Voltage
The output voltage is programmed by the resistor divider
capacitor selection is dependent upon ESR (equivalent
series resistance) and capacitance of the output capaci-
connected to FB pin. The preset output voltage is calculated by the following equation :
tor over the operating temperature.
Ultra-low-ESR capacitors (such as ceramic chip
R1 

VOUT = 0.8 ⋅ 1 +

 R2 
capacitors) and low-ESR bulk capacitors (such as solid
tantalum, POSCap, and Aluminum electrolytic capacitors)
........... (V)
Where R1 is the resistor connected from VOUT to FB with
Kelvin sensing connection and R2 is the risistor con-
can all be used as output capacitors.
During load transients, the output capacitors, depending
nected from FB to GND. A bypass capacitor(C1) may be
connected with R1 in parallel to improve load transient
on the stepping amplitude and slew rate of load current,
are used to reduce the slew rate of the current seen by
response and stability.
the APL5940 and help the device to minimize the variations of output voltage for good transient response. For
the applications with large stepping load current, the lowESR bulk capacitors are normally recommended.
Decoupling ceramic capacitors must be placed at the
load and ground pins as close as possible and the impedance of the layout must be minimized.
Input Capacitor
The APL5940 requires proper input capacitors to supply
current surge during stepping load transients to prevent
the input voltage rail from dropping. Because the parasitic inductor from the voltage sources or other bulk capacitors to the VIN pin limit the slew rate of the surge
currents, more parasitic inductance needs more input
capacitance.
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APL5940
Layout Consideration
Please solder the Exposed Pad on the VIN pad on
the top-layer of PCBs. The VIN pad must have wide
Thermal Consideration
Refer to the figure 2, the SOP-8P is a cost-effective package featuring a small size like a standard SOP-8 and a
size to conduct heat into the ambient air through the
VIN plane and PCB as a heat sink.
2.
3.
bottom exposed pad to minimize the thermal resistance
of the package, being applicable to high current applica-
Please place the input capacitors for VIN and VCNTL
pins near the pins as close as possible for
tions. The exposed pad must be soldered to the top-layer
VIN plane. The copper of the VIN plane on the Top layer
decoupling high-frequency ripples.
Ceramic decoupling capacitors for load must be
conducts heat into the PCB and ambient air. Please enlarge the area of the top-layer pad and the VIN plane to
placed near the load as close as possible for
decoupling high-frequency ripples.
4.
5.
reduce the case-to-ambient resistance (θCA).
To place APL5940 and output capacitors near the
load reduces parasitic resistance and inductance
102 mil
for excellent load transient response.
The negative pins of the input and output capacitors
1
and the GND pin must be connected to the ground
plane of the load.
6.
Large current paths, shown by bold lines on the figure 1, must have wide tracks.
7.
Place the R1, R2, and C1 near the APL5940 as close
as possible to avoid noise coupling.
8.
Connect the ground of the R2 to the GND pin by using a dedicated track.
9.
Connect the one pin of the R1 to the load for Kelvin
sensing.
2
118 mil
3
8
SOP-8P
7
6
5
4
Top
VOUT
plane
Die
Exposed
Pad
Top
VIN
plane
Ambient
Air
PCB
10. Connect one pin of the C1 to the VOUT pin for reliable feedback compensation.
Figure 2
Recommended Minimum Footprint
VCNTL
0.024
CCNTL
CIN
8
VCNTL
7
6
5
VIN
VIN
APL5940
0.072
1.
VOUT
VOUT
0.138
R1
Load
0.118
FB
GND
0.212
COUT
C1
R2
1
Figure 1
2
0.050
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
12
3
4
Unit : Inch
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APL5940
Package Information
SOP-8P
D
SEE VIEW A
h X 45o
E
THERMAL
PAD
E1
E2
D1
c
A1
0.25
A2
A
b
e
GAUGE PLANE
SEATING PLANE
θ
L
VIEW A
S
Y
M
B
O
L
SOP-8P
MILLIMETERS
MIN.
INCHES
MAX.
A
1.60
A1
0.00
0.15
A2
1.25
b
0.31
MAX.
MIN.
0.063
0.006
0.000
0.049
0.51
0.012
0.020
0.010
c
0.17
0.25
0.007
D
4.80
5.00
0.189
0.197
D1
2.50
3.50
0.098
0.138
0.244
E
5.80
6.20
0.228
E1
3.80
4.00
0.150
0.157
E2
2.00
3.00
0.079
0.118
e
1.27 BSC
0.050 BSC
h
0.25
0.50
0.010
0.020
L
0.40
1.27
0.016
0.050
0o C
8o C
0
0oC
8oC
Note : 1. Followed from JEDEC MS-012 BA.
2. Dimension "D" does not include mold flash, protrusions or gate burrs.
Mold flash, protrusion or gate burrs shall not exceed 6 mil per side .
3. Dimension "E" does not include inter-lead flash or protrusions.
Inter-lead flash and protrusions shall not exceed 10 mil per side.
Copyright  ANPEC Electronics Corp.
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APL5940
Carrier Tape & Reel Dimensions
P0
P2
P1
A
B0
W
F
E1
OD0
K0
A0
OD1
B
A
B
T
SECTION A-A
SECTION B-B
H
A
d
T1
Application
SOP-8P
A
H
T1
C
d
D
W
E1
F
330.0±2.00
50 MIN.
12.4+2.00
-0.00
13.0+0.50
-0.20
1.5 MIN.
20.2 MIN.
12.0±0.30
1.75±0.10
5.5±0.05
P0
P1
P2
D0
D1
T
A0
B0
K0
2.0±0.05
1.5+0.10
-0.00
1.5 MIN.
0.6+0.00
-0.40
6.40±0.20
5.20±0.20
2.10±0.20
4.0±0.10
8.0±0.10
(mm)
Devices Per Unit
Package Type
Unit
Quantity
SOP- 8P
Tape & Reel
2500
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APL5940
Taping Direction Information
SOP-8P
USER DIRECTION OF FEED
Classification Profile
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APL5940
Classification Reflow Profiles
Profile Feature
Sn-Pb Eutectic Assembly
Pb-Free Assembly
100 °C
150 °C
60-120 seconds
150 °C
200 °C
60-120 seconds
3 °C/second max.
3°C/second max.
183 °C
60-150 seconds
217 °C
60-150 seconds
See Classification Temp in table 1
See Classification Temp in table 2
Time (tP)** within 5°C of the specified
classification temperature (Tc)
20** seconds
30** seconds
Average ramp-down rate (Tp to Tsmax)
6 °C/second max.
6 °C/second max.
6 minutes max.
8 minutes max.
Preheat & Soak
Temperature min (Tsmin)
Temperature max (Tsmax)
Time (Tsmin to Tsmax) (ts)
Average ramp-up rate
(Tsmax to TP)
Liquidous temperature (TL)
Time at liquidous (tL)
Peak package body Temperature
(Tp)*
Time 25°C to peak temperature
* Tolerance for peak profile Temperature (Tp) is defined as a supplier minimum and a user maximum.
** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum.
Table 1. SnPb Eutectic Process – Classification Temperatures (Tc)
Package
Thickness
<2.5 mm
≥2.5 mm
Volume mm
<350
235 °C
220 °C
3
Volume mm
≥350
220 °C
220 °C
3
Table 2. Pb-free Process – Classification Temperatures (Tc)
Package
Thickness
<1.6 mm
1.6 mm – 2.5 mm
≥2.5 mm
Volume mm
<350
260 °C
260 °C
250 °C
3
Volume mm
350-2000
260 °C
250 °C
245 °C
3
Volume mm
>2000
260 °C
245 °C
245 °C
3
Reliability Test Program
Test item
SOLDERABILITY
HOLT
PCT
TCT
HBM
MM
Latch-Up
Copyright  ANPEC Electronics Corp.
Rev. A.1 - Jul., 2009
Method
JESD-22, B102
JESD-22, A108
JESD-22, A102
JESD-22, A104
MIL-STD-883-3015.7
JESD-22, A115
JESD 78
16
Description
5 Sec, 245°C
1000 Hrs, Bias @ 125°C
168 Hrs, 100%RH, 2atm, 121°C
500 Cycles, -65°C~150°C
VHBM≧2KV
VMM≧200V
10ms, 1tr≧100mA
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APL5940
Customer Service
Anpec Electronics Corp.
Head Office :
No.6, Dusing 1st Road, SBIP,
Hsin-Chu, Taiwan, R.O.C.
Tel : 886-3-5642000
Fax : 886-3-5642050
Taipei Branch :
2F, No. 11, Lane 218, Sec 2 Jhongsing Rd.,
Sindian City, Taipei County 23146, Taiwan
Tel : 886-2-2910-3838
Fax : 886-2-2917-3838
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