AZ317H中文资料
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ3171
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
General Description
The AZ317 is an adjustable three-terminal positive voltage regulator with a very low dropout of 1.2V at 1A output current. Using 2 external resistors, the AZ317 can provide an adjustable output voltage down to 1.25V .
The AZ317 includes a circuit of trimmed bandgap ref-erence to assure output voltage accuracy to be within 1%. It also provides current limiting and thermal shut-down. The current limit is trimmed to ensure specified output current and controlled short-circuit current. The On-chip thermal limiting provides protection against any combination of overload and ambient temperature that would create excessive junction temperature. The AZ317 is available in the standard SOT-223, TO-220-3, TO-252-2 (1) and TO-263-3 power packages.
Features
·Typical 1% Output V oltage Tolerance ·Typical 0.01%/V Line Regulation ·Typical 0.2% Load Regulation
·Very Low Dropout V oltage: 1.2V at 1A Output Current
·Trimmed Current Limit ·On-chip Thermal Protection
·
Operation Junction Temperature: 0 to 125o C
Applications
·PC Motherboard ·LCD Monitor ·Graphic Card ·DVD Player
·Network Interface Card/Switch ·Telecom Equipment
·
Printer and other Peripheral Equipment
Figure 1. Package Types of AZ317
SOT-223
TO-220-3
TO-252-2 (1) TO-263-3
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ3172
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
H Package (SOT-223)
T Package (TO-220-3)
Pin Configuration
Functional Block Diagram
Figure 3. Functional Block Diagram of AZ317
V OUT
INPUT OUTPUT ADJ
V OUT
INPUT
OUTPUT
ADJ
INPUT OUTPUT ADJ
V OUT
INPUT OUTPUT ADJ
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ3173
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
Package Tempera-ture Range Part Number
Marking ID
Packing Type Tin Lead Lead Free Tin Lead Lead Free SOT-2230 to 125o C AZ317HTR AZ317HTR-E1317H EH31A Tape & Reel
TO-220-30 to 125o C AZ317T AZ317T-E1AZ317T AZ317T-E1Tube TO-252-2 (1)0 to 125o C AZ317D AZ317D-E1AZ317D AZ317D-E1Tube AZ317DTR AZ317DTR-E1AZ317D AZ317D-E1Tape & Reel
TO-263-3
0 to 125o C
AZ317S AZ317S-E1AZ317S AZ317S-E1Tube AZ317STR
AZ317STR-E1
AZ317S
AZ317S-E1
Tape & Reel
Circuit Type
Package
H: SOT-223E1: Lead Free
Blank: Tin Lead AZ317 -
TR: Tape and Reel
Blank: Tube
T: TO-220-3D: TO-252-2 (1)S: TO-263-3
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Ordering Information
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ317 Absolute Maximum Ratings (Note 1)
Parameter Symbol Min Max Unit
Input V oltage V IN20V Maximum Junction Temperature T J150o C Storage Temperature T S -65150 o C
Lead Temperature (Soldering, 10sec)T LEAD300 o C
ESD (Human Body Model)ESD4000V
Note1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter Symbol Min Max Unit
Input V oltage V IN V OUT+215V Operating Junction Temperature Range T J 0125 o C
Mar. 2007 Rev. 1. 3BCD Semiconductor Manufacturing Limited
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3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ3175
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
Parameter Symbol Conditions Min Typ Max Unit Reference V oltage V REF 10mA ≤I OUT ≤1A,
3V ≤ (V IN -V OUT ) ≤10V
1.20
1.25 1.30V Line Regulation S V I OUT ≤ 20mA, 3V ≤V IN -V OUT ≤10V 0.010.04%/V Load Regulation Si
V IN -V OUT = 2V , 10mA ≤I OUT ≤1A 0.20.4%Thermal Regulation 20ms Pulse 0.040.07%/W Dropout V oltage ?V I OUT = 1A 1.2
1.3V Current Limit I LIMIT (V IN -V OUT ) = 2V
1.2 1.5 1.8A Adjust Pin Current 50
100μA Adjust Pin Current Change 1.4V ≤(V IN -V OUT ) ≤ 10V , 10mA ≤I OUT ≤1A 0.25μA Minimum Load Current 3V ≤ (V IN -V OUT ) ≤ 15V
3.510
mA Ripple Rejection f =120Hz, C OUT =1μF Tantalum, (V IN -V OUT ) = 3V , I OUT =1A
60
75dB Temperature Stability 1%Long -Term Stability
T A =125o C, 1000hrs 0.3%RMS Output Noise (% of V OUT )T A =25o C, 10Hz ≤ f ≤ 10kHz 0.003%
Thermal Resistance, Junction to Case
SOT-223TO-252TO-220TO-263
15 10 4.5 4o C/W
Thermal Shutdown
Junction Temperature 150o C Thermal Shutdown Hysteresis
25
o C
(Typicals and limits apply for T J =25o C, P ≤ Maximum Power Dissipation unless otherwise specified.)(Note 2)
Note 2: Maximum Power Dissipation is Package Type and Case Temperature dependent. Please see Figure 12.
Electrical Characteristics
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ3176
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
Typical Performance Characteristics
Figure 5. Dropout Voltage vs. Output Current Figure 6. Load Regulation vs. Temperature
Figure 7. Reference Voltage vs. Temperature Figure 8. Output Voltage vs. Temperature
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ3177
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
Figure 9. Minimum Load Current vs. Temperature Figure 11. Short-Circuit Current vs. Temperature Figure 12. Maximum Power Dissipation
Typical Performance Characteristics (Continued)
Figure 10. Adjust Pin Current vs. Temperature
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ3178
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
Typical Performance Characteristics (Continued)
Figure 13. Ripple Rejection vs. Frequency Figure 14. Line Transient Response
Figure 15. Load Transient Response
Line_transient_response
V IN =4.8V , V OUT =3.33V , C IN =1μ,C OUT =10μ (TAN)
V OUT
V IN =5.8V
V IN =4.8V
V IN =4.8V , V OUT =3.33V, C IN =C OUT =10μ (TAN)preload=0.1A
Line_transient_response
V OUT
I OUT =0.5A
I OUT =0.1A
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ317 Typical Application
* = C IN is required if the regulator is located near power supply filter.
**= C O is needed for stability and it improves transient response.
V OUT = V REF x (1+R2/R1) + I ADJ x R2
Since I ADJ is controlled to less than 100μA, the error associated with this term is negligible
in most applications.
Figure 4. Typical Application of AZ317
Mar. 2007 Rev. 1. 3BCD Semiconductor Manufacturing Limited
9
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ317 Mechanical Dimensions
SOT-223Unit: mm(inch)
Mar. 2007 Rev. 1. 3BCD Semiconductor Manufacturing Limited
10
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ317 Mechanical Dimensions (Continued)
TO-220-3Unit: mm(inch)
Mar. 2007 Rev. 1. 3BCD Semiconductor Manufacturing Limited
11
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ31712
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
Mechanical Dimensions (Continued)
Unit: mm(inch)
TO-252-2(1)
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR AZ317 Mechanical Dimensions (Continued)
TO-263-3Unit: mm(inch)
Mar. 2007 Rev. 1. 3BCD Semiconductor Manufacturing Limited
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IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others.
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