參數(shù)資料
型號： LV5050NV
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 1100 kHz SWITCHING FREQ-MAX, PDSO20
封裝： 0.225 INCH, SSOP-20
文件頁數(shù)： 2/6頁
文件大小： 93K
代理商： LV5050NV
LV5050NV
No.A1159-2/7
Continued from preceding page.
Parameter
Symbol
Conditions
Ratings
Unit
Allowable terminal voltage *2
1
HDRV,CBOOT
28
V
2
Between
HDRV, CBOOT and SW
6.5
V
3
VIN, ILIM, RSNS, SW, PGOOD
18
V
4
VLIN5, VDD, LDRV
6.5
V
5
COMP, FB, SS, UV_DELAY
TD, CT, CLKO
VLIN5+0.3
V
*2: The Allowable Terminal Voltage, the SGND+PGND pin becomes a standard except for No.2 of the allowable terminal voltage about No.2 of
the allowable terminal voltage, the SW pin becomes a standard.
Recommended Operating Condition at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage
VIN
VIN and VLIN5 pins opens
7.5 to 16
V
Supply voltage
VIN
VIN and VLIN5 pins shorted
4.5 to 6.0
V
Electrical Characteristics at Ta = 25
°C, VIN=12V, Unless especially specified
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
System
Reference voltage for comparing
VREF
0.818
0.826
0.834
V
Supply current 1
ICC1
TD = 5V (Except for the Ciss charge)
2
4
mA
Supply current 2
ICC2
TD = 0V
0.3
0.6
1.2
mA
5V supply voltage
VLIN5
IVIN5 = 0 to 10mA
4.75
5.00
5.25
V
Over-current sense comparator offset
VCLOS
-5
+5
mV
Over-current sense reference current
source
ICL
VIN = 10 to 14V
7.47
8.30
9.13
A
Leading edge pulse blank time
TLEPB
120
150
Soft start source current
ISSSC
TD = 5V
-2.0
-3.5
-5.0
A
Soft start sink current
ISSSK
TD = 0V
0.5
2.0
mA
Soft start clamp voltage
VSST0
When the voltage of the SS pin operating
1.2
1.6
2.0
V
UV_DELAY source current
ISCUVD
UV_DELAY = 2V
-6.1
-8.6
-12.0
A
UV_DELAY sink current
ISKUVD
UV_DELAY = 2V
0.5
2
mA
UV_DELAY threshold voltage
VUVD
1.9
2.4
3.0
V
UV_DELAY operating voltage
VUVP
100% at VFB = VREF
87
92
97
%
VUVP detection hysteresis
VUVP
1.5
%
Output discharge transistor ON resistance
VSWON
5
10
20
Output part
CBOOT leakage current
ICBOOT
VCBOOT = VSW + 6.5V
10
A
HDRV LDRV source current
ISCDRV
0.5
1.0
A
HDRV LDRV sink current
ISKDRV
0.5
1.0
A
HDRV lower ON resistance
RHDRV
IOUT = 500mA
0.5
1.5
3.0
LDRV lower ON resistance
RLDRV
IOUT = 500mA
0.5
1.5
3.0
Synchronous ON prevention dead time 1
Tdead1
LDRV OFF
→HDRV ON
50
70
120
ns
Synchronous ON prevention dead time 2
Tdead2
HDRV OFF
→LDRV ON
70
120
280
ns
Oscillator
Oscillation freaquency
fosc
CT = 130pF
280
330
380
kHz
Oscillation frequency range
foscop
250
1100
kHz
Maximum ON duty
DON max
CT = 130pF
83
90
79
%
Minimum ON time
TON min
CT = 130pF
100
ns
Upper-side voltage saw- tooth wave
VsawH
fOSC = 300kHz
1.5
2
2.6
V
Lower-side voltage saw-tooth wave
VsawL
fOSC = 300kHz
0.8
1
1.2
V
Continued on next page.
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