參數(shù)資料
型號(hào)： DPA423P
廠商： POWER INTEGRATIONS INC
元件分類： 穩(wěn)壓器
英文描述： 1.75 A SWITCHING REGULATOR, 425 kHz SWITCHING FREQ-MAX, PDIP8
封裝： PLASTIC, MS-001AB, DIP-8
文件頁(yè)數(shù)： 14/36頁(yè)
文件大?。?/td> 705K
代理商： DPA423P
Rev. S 12/07
21
DPA422-426
www.powerint.com
Parameter
Symbol
Conditions
SOURCE = 0 V; T
J = -40 to 125 °C
See Figure 33
(Unless Otherwise Specied)
Min
Typ
Max
Units
Control Functions
Switching
Frequency
f
OSC
T
J = 25 °C
FREQUENCY Pin
Connected to SOURCE
375
400
425
kHz
FREQUENCY Pin
Connected to CONTROL
282
300
317
Duty Cycle (Prior to
Cycle Skipping)
DC
MIN
46
%
Maximum Duty Cycle
DC
MAX
I
C = ICD1
V
L = 0 V
71
75
79
%
I
L = 80 μA
52
62
71
I
L = 115 μA
32
42
57
Control Current at Start
of Cycle Skipping
I
C(skip)
T
J = 25 °C; fOSC = 400 kHz
DPA422
6.3
8.0
mA
DPA423
7.2
9.0
DPA424
8.2
10.0
DPA425
10.0
12.0
DPA426
11.5
14.0
External Bias
Current
I
B
T
J = 25 °C; fOSC = 400 kHz
DPA422
1.8
2.5
3.1
mA
DPA423
2
2.8
3.5
DPA424
2.5
3.5
4.4
DPA425
3.6
4.8
6.0
DPA426
4.4
5.7
7.1
Absolute Maximum Ratings(1,5)
DRAIN Voltage .....................................................-0.3 V to 220 V
DRAIN Peak Current:
DPA422......................................1.31 A
DPA423......................................1.75 A
DPA424....................................... 3.5 A
DPA425...........................................7 A
DPA426....................................... 9.6 A
CONTROL Voltage ................................................ -0.3 V to 9 V
CONTROL Current .........................................................100 mA
LINE SENSE Pin Voltage ...................................... -0.3 V to 9 V
EXTERNAL CURRENT LIMIT Pin Voltage ........ -0.3 V to 9 V
FREQUENCY Pin Voltage ....................................... -0.3 V to 9 V
Storage Temperature-65 °C to 150 °C
Operating Junction Temperature(2).................... -40 °C to 150 °C
Lead Temperature(3) ....................................................... 260 °C
Notes:
1. All voltages referenced to SOURCE, T
A = 25 °C.
2. Normally limited by internal circuitry.
3. 1/16” from case for 5 seconds.
4. Maximum ratings specied may be applied, one at a time,
without causing permanent damage to the product.
Exposure to Absolute Maximum Rating conditions for
extended periods of time may affect product reliability.
Theraml Impedance
Thermal Impedance: P or G Package:
(
θ
JA) ........................... 70 °C/W
(1); 60 °C/W(2)
(
θ
JC)
(3) ............................................11 °C/W
R Package:
(
θ
JA) ................................................. 40 °C/W
(4)
(
θ
JA) ................................................. 30 °C/W
(5)
(
θ
JC)
(6) .............................................. ..2 °C/W
Notes:
1. Soldered to 0.36 sq. in. (232 mm2), 2 oz. (610 g/m2) copper clad.
2. Soldered to 1 sq. in. (645 mm2), 2 oz. (610 g/m2) copper clad.
3. Measured on pin 7 (SOURCE) close to plastic interface.
4. Soldered to 1 sq. in. (645 mm2), 2 oz. (610 g/m2) copper clad.
5. Soldered to 3 sq. in. (1935 mm2), 2 oz. (610 g/m2) copper clad.
6. Measured at the back surface of tab.
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