APE8901 Format - Advanced Power Electronics Corp

Advanced Power
Electronics Corp.
APE8901
1A ULTRA LOW DROPOUT LINEAR REGULATOR
FEATURES
DESCRIPTION
Ultra Low Dropout - 0.2V(typical) at 1A Output Current
Low ESR Output Capacitor (Multi-layer Chip
Capacitors (MLCC)) Applicable
0.8V Reference Voltage
Fast Transient Response
Adjustable Output Voltage by External Resistors
Power-On-Reset Monitoring on Both VCNTL and VIN Pins
Internal Soft-Start
Under-Voltage Protection
Current-Limit and Thermal Shutdown Protection
Power-OK Output with a Delay Time
ESOP-8, SOT-26 and DFN 2x2 Pb-Free Packages.
The APE8901 is a 1A ultra low dropout linear
regulator. This product is specifically designed to provide
well supply voltage for front-side-bus termination on
motherboards and NB applications. The IC needs two
supply voltages, a control voltage for the circuitry and a
main supply voltage for power conversion, to reduce
power dissipation and provide extremely low dropout. The
APE8901 integrates many functions. A Power-On-Reset
(POR) circuit monitors both supply voltages to prevent
wrong operations. A thermal shutdown and current limit
functions protect the device against thermal and current
over-loads. A POK indicates the output status with time
delay which is set internally. It can control other converter
for power sequence. The APE8901 can be enabled by
other power system. Pulling and holding the EN pin below
0.3V shuts off the output.
The APE8901 is available in ESOP-8, SOT-26 and
DFN 2x2 packages. That features small size as SOP-8
with an Exposed Pad to reduce the junction-to-case
resistance, being applicable in 2~3W applications.
TYPICAL APPLICATION CIRCUIT
1. Using an Output Capacitor with ESR > 20mΩ
R3
1K
U1
VCNTL=5V
VIN=1.5V
VIN
VCNTL
C2
ON
NC
POK
C1
OFF
100uF
0.1uF
VOUT
EN
1uF
C3
GND
FB
Vout=1.2V/1A
APE8901
R1
1K
C6
12~48nF
R2
2K
C4
C5
220uF
0.1u
2. Using an MLCC as the Output Capacitor
R3
1K
U2
VCNTL=5V
VCNTL
VIN=1.5V
VIN
C3
ON
POK
EN
C1
1uF
OFF
GND
NC
22uF
VOUT
Vout=1.2V/1A
FB
APE8901
R1
39K
C6
C5
56pF
22u
R2
78K
VOUT=VFB*(1+R1/R2)
VFB = 0.8V
Data and specifications subject to change without notice
1
200906252
Advanced Power
Electronics Corp.
APE8901
ABSOLUTE MAXIMUM RATINGS (at TA=25oC)
VCNTL Supply Voltage (VCNTL) -------------------------- -0.3V to 7V
VIN Supply Voltage (VIN) ---------------------------------- -0.3V to 6V
EN & FB Pin Voltage (VI/O) ------------------------------ -0.3V to VCNTL+0.3V
Power Voltage (VPOK) -------------------------------------- -0.3V to 7V
Power Dissipation (P D)
ESOP-8 ------
3W
SOT-26 ------- 0.4W
DFN 2x2 ------ 0.8W
Storage Temperature Range (T ST) --------------------- -65°C To 150°C
Junction Temperature Range (T J) ---------------------- -40°C To 125°C
Operating Temperature Range (T OP) ------------------ -40°C To 85°C
Thermal Resistance Junction to Ambient (Rth ja)
ESOP-8 ------
40°C/W
SOT-26 ------- 250°C/W
DFN 2x2 ------ 125°C/W
Thermal Resistance Junction to Case (Rth jc)
ESOP-8 ------
15°C/W
SOT-26 ------- 180°C/W
DFN 2x2 ------ 20°C/W
Note. Rthja is measured with the PCB copper area (need connect to Expose-Pad) of approximately 1.5 in2 (Multi-layer) by ESOP-8 and DFN-8L packages.
RECOMMENDED OPERATING CONDITIONS
VCNTL Supply Voltage (VCNTL) -------------------------- 3V to 6V
VIN Supply Voltage (VIN) ---------------------------------- 1V to 5.5V
Output Voltage (VOUT) -------(VCNTL-VOUT > 1.9V)----
0.8V to 2.8V
Output Current (IOUT) -------------------------------------- 0 to 1A
ORDERING INFORMATION
APE8901X
Package Type
MP : ESOP-8
Y : SOT-26
GN2 : DFN 2x2
PACKAGE INFORMATION
GND FB VOUT NC
EN
( Top View)
POK
1
EN
2
VIN
3
VCNTL
4
8 GND
AX5913
GND
ESOP-8
1
FB
2
8
4
( Top View)
SOT-26
VOUT
5 NC
5
6
7 FB
6
VIN VCNTL
3
GND VOUT
7
6
5
GND
1
2
POK EN
3
4
VIN VCNTL
DFN 2x2
(TOP VIEW)
2
Advanced Power
Electronics Corp.
APE8901
ELECTRICAL SPECIFICATIONS
(VCNTL = 5V, VIN = 1.5V, VOUT = 1.2V, TA=25oC unless otherwise specified)
Parameter
SYM
TEST CONDITION
MIN
TYP
MAX
UNITS
VCNTL POR Threshold
VCNTL
2.5
2.7
2.9
V
VCNTL POR Hysteresis
VCNTL(hys)
-
0.4
-
V
VIN POR Threshold
VIN
0.8
0.9
1
V
VIN POR Hysteresis
VIN(hys)
-
0.5
-
V
0.4
1
2
mA
VCNTL Nominal Supply Current
ICNTL
EN= VCNTL
VCNTL Shuntdown Current
ISD
EN= 0V
Feedback Voltage
VFB
VCNTL=3 ~ 6.0V
Load Regulation
IOUT=0A ~ 1A
VDROP
Dropout Voltage
VOUT Pull Low Resistance
Soft Start Time
uA
V
-
0.06
0.25
%
-
200
250
-
250
300
EN=0V
-
90
120
Ω
-
2
-
mS
mV
VENH
Enable
1.2
-
-
VENL
Disable
-
-
0.4
-
50
-
mV
-
10
-
uA
1.2
-
-
A
-
70
-
-
65
-
EN Pin Pull-Up Current
IEN
EN=GND
Current Limit
ILIM
125℃
Ripple Rejection
30
0.816
VOUT<2.0V,IOUT=1A
EN Hysteresis
VIN
VCNTL
10
0.8
2.0V<VOUT<2.8V,IOUT=1A
TSS
EN Pin Logic High Threshold Voltage
0.784
PSRR
Under-Voltage Threshold
F=120Hz, IOUT=100mA
V
dB
VFB Falling
-
0.4
-
V
POK Threshold Voltage for Power OK
VPOK
VFB Rising
89%
92%
95%
VFB
POK Threshold Voltage for Power
Not OK
VPNOK
VFB Falling
78%
81%
84%
VFB
-
0.25
0.4
V
0.8
2
10
mS
-
150
-
°C
-
40
-
°C
POK Low Voltage
POK Delay Time
Thermal Shutdown Temp
POK sinks 5mA
TDELAY
TSD
Thermal Shutdown Hysteresis
PIN DESCRIPTIONS
PIN SYMBOL
FB
PIN DESCRIPTION
Feedback Pin
EN
Internal Pull High.
EN=High or Floating → Enable
EN=Low → Shutdown Mode
VIN
Input voltage.
POK
Power OK Output Pin
VCNTL
NC
CNTL Pin Input Voltage
No connect
VOUT
Output Voltage
GND
GND Pin.
3
Advanced Power
Electronics Corp.
APE8901
BLOCK DIAGRAM
N-MOSFET
VIN
VCNTL
EN
Current
Limit
Power -ON
Reset
Enable
Soft-Start
And
Control Logic
VOUT
Error
Amp
-
90Ω
+
Bandgap
UV
GND
+ FB
Delay
+
0.4V
POK
-
Thermal
Shutdown
90%
Vref
POK
PIN DESCRIPTION
FB
Connecting this pin to an external resistor divider receives the feedback voltage of the
regulator. The output voltage set by the resistor divider is determined by:
Where R1 is connected from VOUT to FB with Kelvin sensing and R2 is connected from FB
to GND. A bypass capacitor may be connected with R1in parallel to improve load transient
response. The recommended R2 and R1 are in the range of 1K~100kΩ.
VIN
Main supply input pins for power conversions. The voltage at this pin is monitored for
Power-On Reset purpose.
VCNTL
Power input pin of the control circuitry. Connecting this pin to a +5V (recommended) supply
voltage provides the bias for the control circuitry. The voltage at this pin is monitored for Power-On
Reset purpose.
POK
Power-OK signal output pin. This pin is an open-drain output used to indicate status of
output voltage by sensing FB voltage. This pin is pulled low when the rising FB voltage is not
above the VPOK threshold or the falling FB voltage is below the VPOK threshold, indicating the
output is not OK.
EN
Enable control pin. Pulling and holding this pin below 0.4V shuts down the output. When reenabled, the IC undergoes a new soft-start cycle. Left this pin open, this pin is internal pulled up to
VCNTL voltage, enabling the regulator.
4
Advanced Power
Electronics Corp.
APE8901
PIN DESCRIPTION
VOUT
Output of the regulator. Please connect Pin 6 using wide tracks. It is necessary to connect
an output capacitor with this pin for closed-loop compensation and improving transient responses.
FUNCTION DESCRIPTION
Power-On-Reset
A Power-On-Reset (POR) circuit monitors both input voltages at VCNTL and VIN pins to
prevent wrong logic controls. The POR function initiates a soft-start process after the two supply
voltages exceed their rising POR threshold voltages during powering on. The POR function also
pulls low the POK pin regardless the output voltage when the VCNTL voltage falls below its falling
POR threshold.
Internal Soft-Start
An internal soft-start function controls rise rate of the output voltage to limit the current
surge at start-up. The typical soft-start interval is about 2mS.
Output Voltage Regulation
An error amplifier working with a temperature compensated 0.8V reference and an output
NMOS regulates output to the preset voltage. The error amplifier designed with high bandwidth
and DC gain provides very fast transient response and less load regulation. It compares the
reference with the feedback voltage and amplifies the difference to drive the output NMOS which
provides load current from VIN to VOUT.
Current-Limit
The APE8901 monitors the current via the output NMOS and limits the maximum current to
prevent load and APE8901 from damages during overload or short circuit conditions.
Under-Voltage Protection (UVP)
The APE8901 monitors the voltage on FB pin after soft-start process is finished. Therefore
the UVP is disabling during soft-start. When the voltage on FB pin falls below the under-voltage
threshold, the UVP circuit shuts off the output immediately. After a while, the APE8901 starts a
new soft-start to regulate output.
Thermal Shutdown
A thermal shutdown circuit limits the junction temperature of APE8901. When the junction
temperature exceeds +150°C, a thermal sensor turns off the output NMOS, allowing the device to
cool down. The regulator regulates the output again through initiation of a new soft-start cycle after
the junction temperature cools by 40°C, resulting in a pulsed output during continuous thermal
overload conditions. The thermal shutdown designed
5
Advanced Power
Electronics Corp.
APE8901
TYPICAL PERFORMANCE CHARACTERISTICS
VCNTL Supply Current
VCNTL Shutdown Current
50
VCNTL Shutdown Current (uA)
VCNTL Supply Current (mA)
3
2.5
2
1.5
1
VIN=1.5V
VOUT=1.2V
No Load
0.5
0
40
30
20
10
0
3
3.5
4
4.5
5
5.5
6
3
3.5
VCNTL (V)
VCNTL VS Feedback Voltage
5
5.5
6
Temperature VS VCNTL Supply Current
4
VIN=1.5V
VCNTL=5V
VOUT=1.2V
No Load
3.5
VCNTL Supply Current (mA)
0.84
Feedback Voltage (V)
4.5
VCNTL (V)
0.86
0.82
0.8
0.78
VIN=1.5V
VOUT=1.2V
Load=100mA
0.76
0.74
3
2.5
2
1.5
1
0.5
0
3
3.5
4
4.5
5
5.5
-40℃ -20℃
6
VCNTL (V)
0℃
25℃
50℃ 85℃ 105℃ 125℃
Temperature (℃)
Load VS Dropout
Load VS Feedback Voltage
0.84
600
0.83
500
VCNTL=5V
0.82
Dropout Voltage (mV)
Feedback Voltage (V)
4
0.81
0.8
0.79
0.78
VIN=1.5V
VCNTL=5V
VOUT=1.2V
0.77
0.76
400
VOUT=3.0V
300
VOUT=2.5V
200
VOUT=1.8V
VOUT=1.2V
100
0
3
3.5
4
4.5
Load (mA)
5
5.5
6
0
200
400
600
800
1000
Load (mA)
6
Advanced Power
Electronics Corp.
APE8901
TYPICAL PERFORMANCE CHARACTERISTICS
Temperature VS VCNTL UVLO
3
0.84
2.9
0.83
2.8
VCNTL UVLO (V)
Feedback Voltage (V)
Temperature VS Feedback Voltage
0.85
0.82
0.81
0.8
0.79
0.78
VIN=1.5V
VCNTL=5V
VOUT=1.2V
Load=10mA
0.77
0.76
0.75
Rising
2.7
2.6
2.5
2.4
2.3
Falling
2.2
2.1
2
-40℃ -20℃ 0℃
25℃ 50℃ 85℃ 105℃ 125℃
-40℃ -20℃ 0℃
Temperature (℃)
25℃ 50℃ 85℃ 105℃ 125℃
Temperature (℃)
Power –ON
Load Transient
(VIN=1.5V, VCNTL=5V,VOUT=1.2V,Laod=1A)
(VIN=1.5V, VCNTL=5V,VOUT=1.2V,Laod=10m~1A)
VCNTL
EN
VOUT
VOUT
IIN
IOUT
Enable –ON
Enable –OFF
(VIN=1.5V, VCNTL=5V,VOUT=1.2V,Laod=1A)
(VIN=1.5V, VCNTL=5V,VOUT=1.2V,No Laod)
VCNTL
EN
EN
VOUT
VOUT
IIN
7
ADVANCED POWER ELECTRONICS CORP.
Package Outline : SOT-26
G
L
L
Millimeters
C
A
SYMBOLS
MIN
NOM
MAX
A
2.70
2.90
3.10
B
2.60
2.80
3.00
C
1.40
1.60
1.80
D
0.30
0.43
0.55
E
0.00
0.05
0.10
B
D
H
1.20REF
G
1.90REF
I
0.12REF
J
0.37REF
L
0.95REF
H
E
I
1.All Dimension Are In Millimeters.
J
2.Dimension Does Not Include Mold Protrusions.
Part Marking Information & Packing : SOT-26
Part Number : H3
H3SS
Date Code
SS:2004,2008,2012…
SS:2003,2007,2011…
SS:2002,2006,2010…
SS:2001,2005,2009…
Draw No. M1-Y-6-G-v00
ADVANCED POWER ELECTRONICS CORP.
Package Outline : DFN 2x2
Millimeters
SYMBOLS
MIN
NOM
MAX
A
0.77
0.90
1.03
A1
0.00
0.015
0.03
b
0.18
0.23
0.28
0.203 REF
C
D
1.95
2.00
2.05
D2
0.55
0.60
0.65
E
1.95
2.00
2.05
E2
1.15
1.20
1.25
__
e
__
0.50
L
0.3
0.35
0.4
y
0
__
0.03
1.All Dimension Are In Millimeters.
2.Dimension Does Not Include Mold Protrusions.
Part Marking Information & Packing : DFN 2x2
H3
XXX
Part Number
Date Code
Draw No. I1-xx-8-G-v00
ADVANCED POWER ELECTRONICS CORP.
Package Outline : ESOP-8
P
Millimeters
SYMBOLS
MIN
NOM
MAX
5.80
6.00
6.20
B
4.80
4.90
5.00
C
3.80
3.90
4.00
D
0°
4°
8°
E
0.40
0.65
0.90
F
0.19
0.22
0.25
M
0.00
0.08
0.15
H
0.35
0.42
0.49
L
1.35
1.55
1.75
Q
A
0.375 REF.
J
B
A2
K
45°
G
1.27 TYP.
P
2.15
2.25
2.35
Q
2.15
2.25
2.35
L
I
J
1.All Dimension Are In Millimeters.
2.Dimension Does Not Include Mold Protrusions.
Part Marking Information & Packing : ESOP-8
Part Number
8901MP
Package Code
YWWSSS
Date Code (YWWSSS)
Y:Last Digit Of The Year
WW:Week
SSS:Sequence
Draw No. M1-MP-8-G-v01