MT1117-1.5A [SIRECT]
1A LDO LINEAR VOLTAGE / REGULATORS; 1A LDO线性电压/稳压器
| 型号： | MT1117-1.5A |
| 厂家： | 
Sirectifier Global Corp. |
| 描述： | 1A LDO LINEAR VOLTAGE / REGULATORS |
| 文件： | 总4页 (文件大小：144K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
E L E C T R O N I C
MT1117
1A LDO LINEAR VOLTAGE / REGULATORS
◆
DESCRIPTION
◆
FEATURES
The MT1117 series are low-drop-out ( LDO ) linear
regulators. The devices have been optimized
for applications where fast transient response and
minimum input voltages are critical. The internal
over-current protection and thermal protection ,makes
the device extremely easy to use in a wide range of
applications.
* Low dropout performance
* Output current of 800mA typical
* Wide range input supply voltage
* Thermal shutdown protection
* Fixed 1.8V, 2.5V, 3.3V output voltages available
* SOT-223 packages available
◆
APPLICATIONS
* Active SCSI terminators
* High efficiency linear regulators
* Motherboard clock supplies
◆
PIN CONFIGURATIONS
SOT-223
TO-252
(Top View)
(Top View)
1
2
3
1
2
3
1: GND, 2: OUT, 3: IN
1: OUT, 2: GND, 3: IN
◆
ABSOLUTE MAXTMUM RETINGS
SYMBOL
PARAMETER
MAXIMUM
UNITS
VIN
Input supply voltage
7
V
Thermal resistance junction to case
OC/W
SOT-223
TO-252
15
10
θJC
θJA
Thermal resistance junction to ambient
SOT-223
156
90
OC/W
TO-252
TJ
TSTG
TLEAD
Operating junction temperature range
Storage temperature range
Lead temperature (soldering) 10sec
0 to 125
- 40 to 150
260
OC
OC
OC
Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents
are positive into, negative out of the specified terminal.
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MT1117
◆
ORDERING INFORMATION
DEVICE
PACKAGE
VOUT VOLTS
TA (OC
)
MT1117A
A
SOT-223
X.X_ 1.5 / 1.8 / 2.5 / 2.8 / 3.0 / 3.3
0~70
MT1117-X.X A
◆
POWER DISSIPATION TABLE:
θJA
Df( mW/OC)
TA≤ 25OC
Power rating(mW)
TA=70OC
Power rating(mW)
TA= 85OC
Power rating (mW)
Package
(OC /W )
TA≥ 25OC
A
156
7.35
919
588
478
Note :
1.θJA: Thermal Resistance-Junction to Ambient, DF : Derating factor, Po: Power consumption.
Junction Temperature Calculation:
TJ = TA+ (PD × θJA), Po = DF × (TJ- TA)
The θJA numbers are guidelines for the thermal performance of the device/PC-board system.
All of the above assume no ambient airflow.
2.θJT: Thermal Resistance-Junction to Ambient, TC: case(Tab) temperature, TJ = TC + (PD × θJT)
For A package, θJT = 15.0OC /W.
For B package, θJT = 7.0OC /W.
◆
RECOMMENDED OPERATING CONDITIONS:
Recommended Operating
Parameter
Symbol
Units
Min.
3
Typ.
Max.
VIN
6
V
Input Voltage
IO
0.1
1.0
4.7
mA
μF
μF
Load Current (with adequate heatsinking)
Input Capacitor (VIN to GND)
C
IN
COUT
Output Capacitor with ESR of 10Ω max., (VOUT to GND)
Junction temperature
TJ
125
OC
◆
TYPICAL APPLICATIONS:
Fixed Voltage Regulator:
VIN
VOUT
MT1117-X.X
CIN
1μF
COUT
4.7μF
I
Q
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MT1117
◆
ELECTRICAL CHARACTERISTICS:
Operating Conditions: 3V≦ VIN ≦ 6V, TJ = 0～125 OC unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNITS
10mA≤ IOUT≤ 1A
TA=25OC,
MT1117-1.5, 3V ≤ VIN ≤ 5.5V
MT1117-1.8, 3V ≤ VIN ≤ 5.5V
MT1117-2.5, 3.5V ≤ VIN ≤ 5.5V
MT1117-2.8, 3.8V ≤ VIN ≤ 5.5V
MT1117-3.0, 4V ≤ VIN ≤ 5.5V
MT1117-3.3, 4.3V ≤ VIN ≤ 5.5V
(VOUT+1V) ≤ VIN ≤ 5.5V
IOUT=10mA
VO
Output Voltage (1)
1.764
2.450
3.234
1.8
2.5
3.3
1.836
2.550
3.366
V
V
V
VSR
VLR
VD
ICL
IQ
Line Regulation (1)
Load Regulation (1)
Dropout Voltage (2)
Current Limit
0.005
0.5
1.0
%
%
10mA≤ IOUT≤ 1A
VIN≥2V, IOUT=1A
(VIN-VOUT)=2V
VIN=VOUT+1.25
0.65
1.5
V
A
Quiescent Current
1
mA
mA
dB
IO
Minimum Load Current 1.5V≤ (VIN-VOUT) ≤ 5.75V
0.1
RA
Ripple Rejection Ratio f = 120Hz,
75
NOTES:
(1) Low duty cycle pulse testing with which TJ remain unchanged.
(2) Δ VOUT, ΔVREF = 1%
◆
TYPICAL PERFORMANCE CHARACTERISTICS:
VIN= 5V，CIN=10μF，COUT= 22μF，TA=25OC unless otherwise specified.
DROPOUT VOLTAGE vs. OUTPUT CURRENT
1.3
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
10
100
300
500
800
Output Current (mA)
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MT1117
◆
APPLICATION NOTE:
1. Maximum Power Dissipation Calculation:
PD(max) = [(VIN(max) - VO(nom))] × IO(nom) + VIN(max) × IQ
Where: VO(nom) : The nominal output voltage
I
O(nom) : The nominal output current, and
IQ : The quiescent current the regulator consumes at IO(MAX)
IN(max) : The maximum input voltage
Then θJA = (150OC – TA) / PD
V
◆
PHYSICAL DIMENSIONS:
3-Pin Surface Mount SOT-223(A)
MILLIMETERS
D
A
MIN
1.50
0.02
0.60
2.90
0.28
6.30
3.30
TYP
1.65
0.05
0.70
-
MAX
1.80
0.08
0.80
3.15
0.32
6.70
3.70
B1
A
A1
B
H
E
B1
c
0.30
6.50
3.50
2.3 BSC
4.6 BSC
7.00
1.00
1.75
5°
D
E
K
L
e
e
e1
H
L
e1
6.70
0.91
1.50
0°
7.30
1.10
2.00
10°
K
α
B
β
3°
Sirectifier Global Corp., Delaware, U.S.A.
U.S.A.: sgc@sirectsemi.com
France: ss@sirectsemi.com
Taiwan: se@sirectsemi.com
Hong Kong: hk@sirectsemi.com
China: st@sirectsemi.com …Thailand: th@sirectsemi.com
Philippines: aiac@sirectsemi.com Belize: belize@sirectsemi.com
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