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參數(shù)資料
| 型號： | ZXLD1601 |
| 廠商： | Zetex Semiconductor |
| 英文描述： | ADJUSTABLE DC - DC BOOST CONVERTER WITH INTERNAL SWITCH IN SC70 |
| 中文描述： | 可調(diào)式直流-直流升壓轉(zhuǎn)換器內(nèi)部采用SC70開關(guān) |
| 文件頁數(shù)： | 2/12頁 |
| 文件大小： | 134K |
| 代理商： | ZXLD1601 |
ABSOLUTE MAXIMUM RATINGS
(Voltages to GND unless otherwise stated)
Input voltage (V
IN
)
LX output voltage (V
LX
)
Switch output current (I
LX
)
Power dissipation (PD)
Operating temperature (T
OP
)
Storage temperature (T
ST
)
J unction temperature (Tj
MAX
)
7V
30V
500mA
300mW
-40 to 85°C
-55 to 150°C
125°C
ZXLD1601
S E M IC O N D U C T O R S
ISSUE 3 - AUGUST 2004
2
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
IN
Input voltage
2.5
5.5
V
I
IN
Supply current
Quiescent
Shutdown
V
EN
= V
IN
, I
LX
= 0, Output not switching
V
EN
= 0V
60
<10
100
100
μA
nA
V
FB
FB pin control voltage
0.98
1.07
V
R
1
Internal resistor from FB pin
to GND pin
135
k
R
2
Internal resistor from FB pin
to V
S ENS E
pin
3.45
M
f
LX
Operating frequency
L=10 H, V
OUT
=28V, 5mA load
600
kHz
T
OFF
T
ON(2)
LX output ‘OFF’ time
350
500
ns
LX output ‘ON’ time
5
μs
I
LX pk
Switch peak current limit
L=10 H, V
OUT
=28V, 5mA load
320
mA
R
LX
Switch ‘On’ resistance
1.75
I
LX (leak)
Switch leakage current
V
LX
=20V
1
μA
V
OUT
Controller default output
voltage
FB pin floating
26
28
V
V
ENH
EN pin high level Input voltage Device active
1.5
V
IN
V
V
ENL
EN pin low level Input voltage
Device in shutdown
0.4
V
I
ENL
EN pin low level input current
V
EN
=0V
-100
nA
I
ENH
T
EN(hold)(3)
EN pin high level input current V
EN
=VIN
1
A
EN pin turn off delay
V
EN
switched from high to low
120
μs
ELECTRICAL CHARACTERISTICS:
(Testconditions: V
IN
=V
EN
=3V, T
AMB
=25°C unless otherwise stated
(1)
)
NOTES:
1 Production testing of the device is performed at 25°C. Functional operation of the device over a –40°C to +85°C temperature range is
guaranteed by design, characterization and process control.
2 Nominal ‘on’ time (TONnom ) is defined by the input voltage (V
IN
), coil inductance (L) and peak current (I
LXpkdc
) according to the expression:
T
ONnom
= {I
LX(pkdc)
x L/V
IN
} +200ns
3 This is the time for which the device remains active after the EN pin has been asserted low. This delay is necessary to allow the output to be
maintained during dc PWM mode operation.
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| ZXLD1615 | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:ADJUSTABLE DC-DC BOOST CONVERTER WITH INTERNAL SWITCH IN |
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