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參數(shù)資料
| 型號(hào)： | LTC3830DICE |
| 廠(chǎng)商： | LINEAR TECHNOLOGY CORP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | DIE |
| 文件頁(yè)數(shù)： | 2/2頁(yè) |
| 文件大?。?/td> | 97K |
| 代理商： | LTC3830DICE |
DICE SPECIFICATION
LTC3830
2
SYMBOL
PARAMETER
CONDITIONS
MIN
MAX
UNITS
VCC
Supply Voltage
38
V
PVCC
PVCC1, PVCC2 Voltage
(Note 6)
3
13.2
V
VUVLO
Undervoltage Lockout Voltage
2.9
V
VFB
Feedback Voltage
VCOMP = 1.25V
1.255
1.275
V
VOUT
Output Voltage
VCOMP = 1.25V
3.250
3.350
V
IVCC
Supply Current
VSHDN = VCC, PVCC1 = PVCC2 = IFB
1.6
mA
VSHDN = 0V
10
A
IPVCC
PVCC Supply Current
VSHDN = VCC, PVCC1 = PVCC2 = IFB (Note 3)
20
mA
VSHDN = 0V
10
A
fOSC
Internal Oscillator Frequency
FREQSET Floating
160
250
kHz
AV
Error Amplifier Open-Loop DC Gain
Measured from FB to COMP,
46
dB
SENSE+ and SENSE– Floating, (Note 4)
gm
Error Amplifier Transconductance
Measured from FB to COMP,
520
780
mho
SENSE+ and SENSE– Floating, (Note 4)
IMAX
IMAX Sink Current
VIMAX = VCC
915
A
VIH
SHDN Input High Voltage
2.4
V
VIL
SHDN Input Low Voltage
0.8
V
IIN
SHDN Input Current
VSHDN = VCC
1
A
ISS
Soft-Start Source Current
VSS = 0V, VIMAX = 0V, VIFB = VCC
–8
–16
A
tr, tf
Driver Rise/Fall Time
PVCC1 = PVCC2 = 5V (Note 5)
250
ns
tNOV
Driver Nonoverlap Time
PVCC1 = PVCC2 = 5V (Note 5)
25
250
ns
LT/LT1005 50 PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2005
Wafer level testing is performed per the indicated specifications for dice. Considerable differences in performance can often be observed for dice versus
packaged units due to the influences of packaging and assembly on certain devices and/or parameters. Please consult factory for more information on
dice performance and lot qualifications via lot sampling test procedures.
Dice data sheet subject to change. Please consult factory for current revision in production.
I.D.No. 66-13-3830
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
DICE ELECTRICAL TEST LI ITS
W
TA = 25°C. VCC, PVCC1, PVCC2 = 5V, unless otherwise noted. (Note 2)
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 3: Supply current in normal operation is dominated by the current
needed to charge and discharge the external FET gates. This will vary with
the LTC3830 operating frequency, operating voltage and the external FETs
used.
Note 4: The open-loop DC gain and transconductance from the SENSE+
and SENSE– pins to COMP pin will be (AV)(1.265/3.3) and (gm)(1.265/3.3)
respectively.
Note 5: Rise and fall times are measured using 10% and 90% levels. Duty
cycle and nonoverlap times are measured using 50% levels.
Note 6: PVCC1 must be higher than VCC by at least 2.5V for G1 to operate
at 95% maximum duty cycle and for the current limit protection circuit to
be active.
Note 7: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Junction
temperature will exceed 125
°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
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