SPX2969S-L/TR [EXAR]
Fixed Positive LDO Regulator, 5V, 0.5V Dropout, PDSO8, LEAD FREE, MS-012AA, SOIC-8;
| 型号： | SPX2969S-L/TR |
| 厂家： | 
EXAR CORPORATION |
| 描述： | Fixed Positive LDO Regulator, 5V, 0.5V Dropout, PDSO8, LEAD FREE, MS-012AA, SOIC-8 光电二极管 输出元件 调节器 |
| 文件： | 总7页 (文件大小：83K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
SPX2969
Preliminary
150mA Low DropoutVoltage Regulator
Q
1
2
8
7
I
FEATURES
SPX2969
■ 5V Fixed Output
SI
SO
8 Pin nSOIC
■ 150mA current capability
■ 250mV Dropout
RADJ
D
3
4
RO
6
5
GND
■ Programmable Reset Threshold
■ 250µA Quiescent Current
Now Available in Lead Free Packaging
■ Over Temperature Protection
■ Reverse Polarity Protection
■ Integrated Pull Up Resistor on Logic Outputs
■ -40° to +125°C Operating Range
APPLICATIONS
■ Automotive
■ Industrial
■ Wireless Base Station
DESCRIPTION
The SPX2969 is a low dropout linear regulator with integrated PNP pass transistor. This part is
designed for high voltage applications, which can withstand up to 45V and 125°C. The output
voltage is set at a fixed 5V, and the part is guaranteed to deliver at least 150mA. The SPX2969
provides multiple protection mechanisms, including over-temperature and over-current detec-
tion. The part has a built-in reset circuit to monitor when the output voltage is below 4.65V. The
reset voltage threshold can be programmed down to 3.5V using an external resistor voltage
divider,whiletheresettimingcanbeprogrammedviaanexternalcapacitor.Abuiltincomparator
compares the signal at the pin SI, normally fed by a voltage divider from the input voltage, with
the reference and gives an early warning on the pin SO. Both the sense output and the reset
output delay signals contain integrated 20kΩ pull up resistors. The part is available in an 8 Pin
nSOIC package.
TYPICAL APPLICATION CIRCUIT
12V
Q
I
5V
+
SPX2969
R
R
+
ADJ1
S1
1000
µF
22µF
®
RADJ
RESET
OUT
RO
SI
SO
R
ADJ2
D
GND
R
S2
0.1µF
Date: 01/27/05
SPX2969 150mA Low Dropout Voltage Regulator
© Copyright 2005 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
Output Voltage ...................................................................... -0.3 to 7V
Output Current ............................................................ internally limited
Input Voltage ...................................................................... -40V to 45V
Input Current ............................................................... internally limited
Sense Input Voltage ........................................................... -40V to 45V
Sense Input Current ......................................................... -1mA to 1mA
Reset Threshold Voltage ....................................................... -0.3 to 7V
Reset Threshold Current ................................................... -10 to 10mA
Reset Delay Voltage ............................................................. -0.3 to 7V
Reset Delay Current .................................................... internally limited
Ground Current .................................................................. 50mA (min)
Reset Output Voltage ............................................................ -0.3 to 7V
Reset Output Current .................................................. internally limited
Sense Output Voltage ........................................................... -0.3 to 7V
Sense Output Current ................................................. internally limited
Thermal Data
Junction Ambient (8 Pin NSOIC) ............................................. 163°C/W
Junction to Pin 4, all GND Pins grounded ................................. 30°C/W
Storage Temperature .................................................. -50°C to +150°C
Junction Temperature. (Note 1).....................................-40°C to +150°C
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
ofthespecificationsbelow isnotimplied. Exposuretoabsolutemaximum
rating conditions for extended periods of time may affect reliability.
ELECTRICAL CHARACTERISTICS
VIN = 13.5V; -40°C < TJ < 125°C. The ♦ denotes the specifications which apply over the full operating temperature range,
unless otherwise specified.
PARAMETER
Output Voltage
Current Limit
SYMBOL MIN
TYP
MAX
5.10
500
UNITS
V
CONDITIONS
1mA < IQ 100mA
♦
♦
V
Q
4.90 5.00
6V < VI
< 16V
I
Q
150
-
250
240
mA
µA
Current Consumption
Iq= II- IQ
Iq
Iq
300
IQ < 1 mA, Tj < 85°C
Current Consumption
♦
♦
-
-
250
2
700
8
µA
Q
I = 10mA
I
q
= I- IQ
I
Current Consumption
Iq= II- IQ
Iq
mA
IQ = 50mA
I
Q
= 100mA (Q - I) when output
Dropout Voltage
Load Regulation
Line Regulation
VDR
-
-
-
0.25
2
0.5
20
10
V
♦
♦
♦
drops below 2% (see note 2)
V
Q
mV
mV
I
Q
= 5mA to 100mA
VI = 6V to 26V
I = 1 mA
Q
VQ
1
Reset Generator
♦
♦
♦
♦
Threshold Voltage
Reset Adjust
V
RT
4.50 4.65
4.80
1.44
40
V
V
VRADJ, TH
-
1.26
10
-
1.35
20
VQ = 3.5V (see note 3)
Reset Pullup
KΩ
V
Saturation Voltage
VRO, SAT
0.1
0.4
Rintern
Note 1: Specifications in the -40°C to 150°C range are guaranteed by design, not production tested.
Note 2: Dropout voltage = VI - VQ measured when the output voltage has dropped 100mV from the nominal value obtained at 13.5V input.
Note 3: The reset threshold V can be decreased via an external voltage divider connected to the RADJ. In this case the reset condition is reached if
RT
V
Q
< V and V
< V
RADJ, TH
. Dimensioning the voltage divider according to: V
= V
X (R
+R
)/R
RT
RADJ
THRES
RADJ, TH
ADJ1
ADJ2 ADJ2.
Date: 01/27/05
SPX2969 150mA Low Dropout Voltage Regulator
© Copyright 2005 Sipex Corporation
2
ELECTRICAL CHARACTERISTICS
VIN = 13.5V; -40°C < TJ < 125°C. The ♦ denotes the specifications which apply over the full operating temperature range,
unless otherwise specified.
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
CONDITIONS
Reset Generator
♦
♦
Upper Delay Switching Threshold
Lower Delay Switching Threshold
VUD
VLD
1.4
0.3
1.8
2.2
V
V
0.45
0.60
Saturation Voltage Delay
Capacitor
♦
VD, SAT
-
-
0.1
V
VQ < VRT
♦
♦
♦
Charge Current
ID
tD
tt
3.0
17
-
6.5
28
1
9.5
µA
ms
µs
VD =1V
Delay Time L to H
Delay Time H to L
-
-
CD = 100nF
CD = 100nF
Input Voltage Sense
♦
♦
Sense Threshold High
Sense Threshold Low
VSI, high
VSI, low
1.25
1.18
1.33
1.22
1.36
1.28
V
V
VSI < 1.20V
VQ > 3V Rintern
♦
Sense Output low Voltage
VSO, low
-
0.1
0.4
V
♦
♦
♦
Sense Pull up
-
isi
-
10
-1
20
0.1
2
40
1
K
Sense Input Current
Sense Response Time
µA
µs
Date: 01/27/05
SPX2969 150mA Low Dropout Voltage Regulator
© Copyright 2005 Sipex Corporation
3
APPLICATIONS INFORMATION
The input capacitor C
I
is necessary for compensating line influences. Using a resistor of
approximately 1Ω in series with C
I
, the oscillating circuit consisting of input inductance and input
capacitance can be damped. The output capacitor C
Q
is necessary for the stability of the
regulatingcircuit. Stabilityisguaranteedatvalues ≥10µFandanESR ≤10Ωwithintheoperating
temperature range. For small tolerances of the reset delay the variation of the capacitance of
the delay capacitor and its temperature coefficient should be noted.
BLOCK DIAGRAM
I
Q
20KΩ
ERROR AMPLIFIER
20KΩ
REFERENCE
TRIMMING
CURRENT AND
SATURATION
CONTROL
D
RO
SO
&
REFERENCE
RADJ
SI
Date: 01/27/05
SPX2969 150mA Low Dropout Voltage Regulator
© Copyright 2005 Sipex Corporation
4
RESET TIMING DIAGRAM
V
V
I
t
Q
<t
rr
V
Q, rt
t
I
dV
dt
V
D
D
=
C
D
V
V
UD
LD
V
t
t
RR
t
t
d
RO
V
RO,SAT
Secondary
Spike
Overload
at Output
Voltage Dip Undervoltage
at Input
Power on
Reset
Thermal
Shutdown
PIN DESCRIPTION
PIN NUMBER
PIN NAME
VIN
DESCRIPTION (8 PIN NSOIC)
1
2
Input. Decouple to GND with a Ceramic capacitor.
Sense Input. If not needed, connect to Q.
SENSE IN
3
4
5
RADJ
DELAY
GND
Reset Threshold Adj. If not needed, connect to GND.
Reset Delay. To select delay time, connect to GND via capacitor.
Ground
Reset Output. The open-collector output is internally linked to Q
via a resistor. Leave open if not needed.
6
RESET
Sense Output. The open-collector output is internally linked to Q
via a resistor. Leave open if not needed.
7
8
SENSE OUT
V
OUT
5V Output. Connect to GND with a 10µF capacitor, ESR<10.
Date: 01/27/05
SPX2969 150mA Low Dropout Voltage Regulator
© Copyright 2005 Sipex Corporation
5
PACKAGE: 8 PIN NSOIC
D
Ø
e
E/2
L2
E1
E
E1/2
Ø
Seating Plane
Ø1
L
L1
Gauge Plane
VIEW C
1
b
INDEX AREA
(D/2 X E1/2)
TOP VIEW
B
B
A1
A
Seating Plane
SEE VIEW C
b
A2
SIDE VIEW
c
BASE METAL
SECTION B-B
WITH PLATING
8 Pin NSOIC JEDEC MS-012 (AA)
Variation
8 Pin NSOIC JEDEC MS-012 (AA)
Variation
MIN
NOM
-
-
-
-
-
MAX
SYMBOL
MIN
1.35
0.10
1.25
0.31
0.17
NOM
-
-
-
-
-
MAX
1.75
0.25
1.65
0.51
0.25
SYMBOL
A
A1
A2
b
0.053
0.004
0.049
0.012
0.007
0.069
0.010
0.065
0.020
0.010
A
A1
A2
b
c
c
D
E
E1
e
L
0.193 BSC
0.236 BSC
0.154 BSC
0.050 BSC
-
D
E
E1
e
L
4.90 BSC
6.00 BSC
3.90 BSC
1.27 BSC
-
0.016
0.050
0.40
1.27
L1
L2
ø
0.04 REF
0.010 BSC
-
L1
L2
ø
1.04 REF
0.25 BSC
-
0º
5º
8º
15º
0º
5º
8º
15º
ø1
-
ø1
-
Note: Dimensions in (inches)
Conversion Factor: 1 Inch = 25.40 mm
Note: Dimensions in (mm)
Controlling Dimension
Date: 01/27/05
SPX2969 150mA Low Dropout Voltage Regulator
© Copyright 2005 Sipex Corporation
6
ORDERING INFORMATION
Package Type
Part number
Output Voltage
SPX2969S ...... ......................................5.0V .......................................... 8 Pin NSOIC
SPX2969S/TR. ......................................5.0V .......................................... 8 Pin NSOIC
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SPX2969S/TR = standard; SPX2969S-L/TR = lead free
/TR = Tape and Reel
Pack quantity is 1,500 for WSOIC and 2,500 for NSOIC.
CLICK HERE TO ORDER SAMPLES
Corporation
ANALOG EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the
application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.
Date: 01/27/05
SPX2969 150mA Low Dropout Voltage Regulator
© Copyright 2005 Sipex Corporation
7
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