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PDF ( 数据手册 , 数据表 ) AZ1117B

零件编号 AZ1117B
描述 LOW DROPOUT LINEAR REGULATOR
制造商 BCD Semiconductor
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AZ1117B 数据手册, 描述, 功能
600mA LOW DROPOUT LINEAR REGULATOR
LOW DROPOUT LINEAR REGULATOR
General Description
Features
Data Sheet
APA1P121371M7
AZ1117B
The AZ1117B is a low dropout three-terminal regula-
tor.
The AZ1117B has been optimized for low voltage
where transient response and minimum input voltage
are critical. It provides current limit and thermal shut-
down. Its circuit includes a trimmed bandgap reference
to assure output voltage accuracy to be within ±1%.
On-chip thermal shutdown provides protection against
a combination of high current and ambient temperature
that would create excessive junction temperature.
The AZ1117B is available in 1.2V, 1.5V, 1.8V, 2.5V,
3.3V, 5.0V fixed output voltage vesions and ADJ out-
put voltage version. The fixed versions integrate the
adjust resistors. It is also available in an adjustable ver-
sion which can set the output voltage with two external
resistors.
· Current Limit: 1.0A (Typ.)
· Output Noise from 10Hz to 10KHz: 0.003% of
VOUT
· PSRR at IOUT=300mA and f=120Hz: 70dB
· Output Voltage Accuracy: ±1%
· On-chip Thermal Shutdown
· Maximum Quiescent Current: IQMAX=6mA
· Operation Junction Temperature: -20 to 125oC
Applications
· USB Device
· Add-on Card
· DVD Player
· PC Motherboard
The AZ1117B is available in the industry-standard TO-
252-2 (1), TO-252-2 (2), TO-252-2 (3), SOT-223 and
SOT-89 power packages.
SOT-223
SOT-89
TO-252-2 (1)
TO-252-2 (2)
Figure 1. Package Type of AZ1117B
TO-252-2 (3)
Sept. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited
1







AZ1117B pdf, 数据表
600mA LOW DROPOUT LINEAR REGULATOR
LOW DROPOUT LINEAR REGULATOR
Data Sheet
APA1P121371M7
AZ1117B
Electrical Characteristics (Continued)
AZ1117B-1.2 Electrical Characteristics
Operating Conditions: VIN10V, IOUT=10mA, TJ=25oC, unless otherwise specified. (Pmaximum power dissipation). Limits
appearing in Boldface type apply over the entire junction temperature range for operation, -20oC to 125oC.
Parameter
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
Symbol
Conditions
VOUT
3.2VVIN10V
VRLINE 1.5VVIN-VOUT10V
VRLOAD
VDROP
SOT-223
VOUT=1%, IOUT=0.8A
TO-252-2(1)/(2)/(3)
Min
1.176
1.152
Typ
1.2
1.2
0.5
2
1.2
1.4
Max
1.224
1.228
6
10
15
1.3
Unit
V
mV
mV
V
Current Limit
Quiescent Current
Ripple Rejection
Temperature Stability
RMS Output Noise
(% of VOUT)
Thermal Shutdown
Thermal Shutdown
Hysteresis
ILIMIT
IQ
PSRR
SOT-89
IOUT=0
f=120Hz, COUT=22µF
(VIN-VOUT)=3V, IOUT=300mA
TA=25oC, 10Hzf≤10KHz
Junction Temperature
1.2
0.85 1 1.15 A
4 6 mA
70 dB
0.5 %
0.003
%
160 oC
16 oC
Thermal Resistance
SOT-223
θJC TO-252-2 (1)/TO-252-2 (2)/TO-252-2 (3)
SOT-89
33
22
oC/
W
39
Sept. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited
8







AZ1117B equivalent, schematic
600mA LOW DROPOUT LINEAR REGULATOR
LOW DROPOUT LINEAR REGULATOR
Typical Performance Characteristics (Continued)
Data Sheet
APA1P121371M7
AZ1117B
0.2
0.1
0
-0.1
5.3
4.8
4.3
3.8
Time (20µs/Div)
Figure 12. Line Transient Response
100
50
0
-50
0.6
0.3
0
-0.3 10mA
-0.6
Time (10µs/Div)
Figure 13. Load Transient Response
80
70
60
50
40
30
20
10
10
100 1k 10k
Frequency (Hz)
100k
Figure 14. PSRR vs. Frequency
1.6
1.4
1.2
1.0
0.8 AZ1117B-2.5V
VIN=4.5V
0.6 No Heatsink
@VOUT=VOUT(nom)x98%
0.4
0.2
0.0
-20 0 20 40 60 80 100 120
Junction Temperature(oC)
Figure 15. Current Limit vs. Junction Temperature
Sept. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited
16










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