SC4436IRTR [SEMTECH]
Three Terminal Voltage Reference, 1 Output, Trim/Adjustable, PDSO5, 3 X 3 MM, SC-70, 5 PIN;型号: | SC4436IRTR |
厂家: | SEMTECH CORPORATION |
描述: | Three Terminal Voltage Reference, 1 Output, Trim/Adjustable, PDSO5, 3 X 3 MM, SC-70, 5 PIN 光电二极管 输出元件 |
文件: | 总6页 (文件大小:153K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SC4436
0.6V Precision
Voltage Reference
PRELIMINARY
POWER MANAGEMENT
Description
Features
Sub 1V reference (0.6V)
The SC4436 is a five terminal device for voltage regula-
tion or over voltage protection of an isolated power sup- Trimmed bandgap design
ply with output voltages down to 600mV.
Very low operating current (10µA)
Wide supply voltage range (1.7V to 30V)
Unconditionally stable
It is intended to be used as a replacement for three
terminal shunt regulators such as SC431L where the
output voltage is too low for the device to function in
Very low temperature coefficient (TBD ppm/°C)
conjunction with an opto-isolator. SC4436 achieves this Industrial temperature range
by having seperate supply and output pins, allowing the
output to sink 20mA of current at voltages ranging from
0.2V to 30V, while the supply pin still has sufficient volt-
age for the device to function. In this way, allowing for a
1.4V drop through an opto-isolator diode, regulation
down to 600mV out can be achieved.
Available in space-saving SC-70 package
Applications
Telecom Power Supplies
Servers and workstation Supplies
Secondary side regulation for very low output
voltage power supplies
Opto driver for very low output voltage
isolated power supplies
The SC4436 shunt regulator is available with initial ref-
erence voltage accuracies of 0.5% in the space saving
5 lead SC-70.
Battery operated applications
Point of use power supplies
Typical Application Circuit
T1
Primary Side
Controller
Secondary Side
Rectification
VIN
and Filtering
Auxillary
Supply
R2
C1
R1
U1
R3
R4
SC4436
IN
OUT
FB
C2
C2 = Open to 100nF
GND
PGND
Revision November 13, 2003
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SC4436
POWER MANAGEMENT
PRELIMINARY
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters
specified in the Electrical Characteristics section is not implied.
Parameter
Symbol
VIN
Maximum
-0.3 to 35
-0.3 to 35
-0.3 to Vin+0.3V
-0.3 to +0.3
332
Units
V
Input Voltage to GND
Output Voltage to GND
VIOUT
VFB
V
Feedback Voltage to GND
PGND to GND
V
V
Thermal Impedance, Junction to Ambient
Operating Ambient Temperature Range
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 seconds
°C/W
°C
°C
°C
°C
θJA
TA
-40 to +85
-40 to +150
-65 to +150
300
TJ
TSTG
TLEAD
Electrical Characteristics
Unless specified: Vin = 1.7V to 30V, Iout = 1mA to 20mA, OUT = FB, Cin = 0.1uF, Cout = 1.0uF, TA = -40°C to 85°C.
Parameter
IN
Symbol
Conditions
Min
Typ
Max Units
Voltage Range
Supply Current
VIN
1.7
30
1
V
I
VIN = 1.7V to 30V
IOUT = 0.3mA
OUT = 10mA
0.5
0.8
mA
IN
I
1.5
FB
FB Threshold Accuracy
TA = +25°C
0.597 0.600 0.603
V
TA = -40°C to +85°C
0.594
0.6
3.8
0.2
0.606
6
FB Load Regulation
FB Line Regulation
IOUT = 1mA to 20mA
mV
mV
VIN = 2V to 15V
VIN = 1.7V to 30V
1
1.5
1
FB Output Voltage Regulation
FB Input Bias Current
V
OUT = 0.2V to 18V, IOUT = 1mA
VIN = 30V
0.2
12
mV
nA
IFB(BIAS)
-60
+60
2003 Semtech Corp.
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SC4436
POWER MANAGEMENT
PRELIMINARY
Electrical Characteristics (Cont.)
Unless specified: Vin = 1.7V to 30V, Iout = 1mA to 20mA, OUT = FB, Cin = 0.1uF, Cout = 1.0uF, TA = -40°C to 85°C.
Parameter
Symbol
Conditions
Min
Typ
Max Units
OUT
Voltage Range
Maximum Output Current
VOUT
0.2
20
30
V
VOUT = 0.25V, VIN = 2V, VFB = 0.630V
mA
IOUT(MAX)
Output Leakage Current
IOUT(LEAK) VIN = 30V, VOUT = 30V, VFB = 0V
0.001
0.03
0.2
0.1
µA
TA = +25°C
TA = +85°C
Dynamic Output Impedance
Dynamic Output Slew rate
ZOUT
IOUT = 1mA to 20mA, f < 1lHz
OUT = 5mA, VIN = 3.3V, VFB = 0.63V
0.32
Ω
I
20
V/µs
2003 Semtech Corp.
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SC4436
POWER MANAGEMENT
PRELIMINARY
Pin Configuration
Ordering Information
Part Number(1)
Package
TOP VIEW
SC4436IRTR
5 lead SC70
PGND
GND
OUT
FB
IN
Notes: (1) Only available in tape and reel packaging.
(Suffix ‘.TR’ e.g. SC4436IRTR).
(SC70 5 Lead)
Pin Descriptions
Pin #
Pin Name
Pin Function
1
2
3
4
5
PGND
GND
OUT
IN
Power ground, should be connected to the GND right at the SC4436 IC pin.
Analog ground, should be connected to the PGND right at the SC4436 IC pin.
This is the output pin of the device, essentially an open collector.
This is the input supply pin for the IC., should be bypassed with a 0.1uF capacitor to GND.
This is connected to the non-inverting input of the error amplifier.
FB
Marking Information
Block Diagram
Top Mark
IN
OUT
4436
FB
Bottom Mark
yyww
GND
PGND
yyww = Datecode (Example: 9908)
2003 Semtech Corp.
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SC4436
POWER MANAGEMENT
PRELIMINARY
Outline Drawing - SC70-5L
Land Pattern - SC70-5L
2003 Semtech Corp.
5
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SC4436
POWER MANAGEMENT
PRELIMINARY
Contact Information
Semtech Corporation
Power Management Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
2003 Semtech Corp.
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相关型号:
SC4436RTRT
Three Terminal Voltage Reference, 1 Output, 0.6V, Trim/Adjustable, PDSO5, ROHS COMPLIANT, MO-203AA, SC-70, 5 PIN
SEMTECH
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