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Номер произв HT7344-7
Описание 30V 250mA TinyPower LDO
Производители Holtek Semiconductor
логотип Holtek Semiconductor логотип 



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HT7344-7 Даташит, Описание, Даташиты
HT73xx-7
30V, 250mA TinyPowerTM LDO with Protections
Features
• Low power consumption
• Low voltage drop
• Low temperature coefficient
• High input voltage – up to 30V
• Output voltage accuracy: tolerance ±2%
• Over current protection
• Over temperature protection
• Chip enable/disable function
• Package types: 8-pin SOP-EP, SOT89-3 and
TO92-3
Applications
• Battery-powered equipment
• Communication equipment
• Audio/Video equipment
General Description
The HT73xx-7 is a low power high voltage series of
regulators implemented in CMOS technology which
has the advantages of low voltage drop and low
quiescent current. They allow input voltages as high
as 30V and are available with several fixed output
voltages ranging from 2.1V to 5.0V.
When the CE input is low, a fast discharge path pulls
the output voltage low via an internal pull-down
resistor. An internal over-current protection circuit
prevents the device from damage even if the output
is shorted to ground. An over-temperature protection
circuit ensures the device junction temperature will
not exceed a temperature of 150°C.
Selection Table
Part No.
HT7321-7
HT7323-7
HT7325-7
HT7327-7
HT7330-7
HT7333-7
HT7336-7
HT7340-7
HT7344-7
HT7350-7
Output Voltage
2.1V
2.3V
2.5V
2.7V
3.0V
3.3V
3.6V
4.0V
4.4V
5.0V
Note: "xx" stands for output voltages.
Packages
Markings
8SOP-EP
HT73xx-7 for the 8SOP-EP type.
TO92-3, SOT89-3 73xx-7 marking for the TO92-3, SOT89-3 types.
Rev. 1.00
1 April 15, 2016









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HT7344-7 Даташит, Описание, Даташиты
Block Diagram
VIN
CE
GND
Vref
En
Soft Start
HT73xx-7
OCP
OTP
300
En
OUT
Pin Assignment
OUT 1
8 VIN
NC 2 9 7 CE
NC 3 VIN 6 NC
NC 4
5 GND
HT73xx-7
8 SOP-A
(Exposed Pad)
SOT89-3
73xx-7
1 23
GND VIN OUT
TO92-3
73xx-7
1 23
GND VIN OUT
Pin Descriptions
8SOP-EP
5
8, 9
1
7
2, 3, 4, 6
Pin No.
SOT89-3
1
2
3
TO92-3
1
2
3
Pin Name
GND
VIN
OUT
CE
NC
Pin Description
Ground pin
Input pin
Output pin
Chip enable pin, high enable
No connection
Rev. 1.30
2 April 15, 2016









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HT7344-7 Даташит, Описание, Даташиты
Absolute Maximum Ratings
Parameter
VIN
VCE
Operating Temperature Range, Ta
Maximum Junction Temperature, TJ(MAX)
Storage Temperature Range
Junction-to-Ambient Thermal Resistance, θJA
Power Dissipation, PD
Note: PD is measured at Ta=25°C.
Recommended Operating Range
Parameter
VIN
VCE
HT73xx-7
8SOP-EP
SOT89-3
TO92-3
8SOP-EP
SOT89-3
TO92-3
Value
-0.3 to +33
-0.3 to (VIN+0.3)
-40 to +85
+150
-65 to +165
125
200
200
0.80
0.50
0.50
Unit
V
V
oC
oC
oC
°C/W
°C/W
°C/W
W
W
W
Value
VOUT+2 to 30
0 to VIN
Unit
V
V
Electrical Characteristics
VIN=VOUT+2V, VCE=VIN, Ta=25oC and CIN=COUT=10μF, unless otherwise specified
Symbol
VIN
VOUT
VO
IOUT
|∆VOUT|
VDIF
ISS1
ISS2
ISHD
∆VOUT
∆VIN × ∆VOUT
∆VOUT
∆Ta × ∆VOUT
ISHORT
TSHD
TREC
VIH
VIL
RDIS
Parameter
Input Voltage
Output Voltage Range
Output Voltage Accuracy
Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Shutdown Current
Line Regulation
Temperature Coefficient
Output Short Current
Shutdown Temperature
Recovery Temperature
Enable High Threshold
Enable Low Threshold
Discharge Resistor
Test Conditions
IOUT=10mA
1mA ≤ IOUT ≤ 100mA
IOUT=1mA, VOUT Change=2% (Note)
IOUT=30mA, VOUT Change=2% (Note)
IOUT=0mA
VCE=2.0V, VIN=30V, IOUT=0mA
VCE=0V
(VOUT+1V) ≤ VIN ≤ 30V, IOUT=1mA
IOUT=40mA, -40°C < Ta < 85°C
VIN=12V, force VOUT=0V
CE pin, VOUT+1V ≤ VIN ≤ 30V
CE pin, VOUT+1V ≤ VIN ≤ 30V
CE=0V, measure at VOUT
Min.
2.1
-2
250
2.0
Typ.
45
6
120
2.5
3.0
0.1
0.1
±100
250
150
25
300
Max.
30
5.0
2
90
15
300
4.0
5.0
0.5
0.2
Unit
V
V
%
mA
mV
mV
mV
μA
μA
μA
%/V
— ppm/°C
— mA
oC
oC
—V
0.6 V
Note: The dropout voltage is defined as the input voltage minus the output voltage that produces a 2% change in
the output voltage from the value at VIN=VOUT+2V with a fixed load.
Rev. 1.30
3 April 15, 2016










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