參數(shù)資料
型號： LT3430IFE-1#TR
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 6.5 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 4.40 MM, PLASTIC, TSSOP-16
文件頁數(shù)： 22/28頁
文件大小： 321K
代理商： LT3430IFE-1#TR
LT3430/LT3430-1
3
34301fa
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Gain is measured with a VC swing equal to 200mV above the low
clamp level to 200mV below the upper clamp level.
Note 3: Minimum input voltage is not measured directly, but is guaranteed
by other tests. It is dened as the voltage where internal bias lines are still
regulated so that the reference voltage and oscillator remain constant.
Actual minimum input voltage to maintain a regulated output will depend
upon output voltage and load current. See Applications Information.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
Note 5: Boost current is the current owing into the BOOST pin with the
pin held 5V above input voltage. It ows only during switch on time.
Note 6: Input supply current is the quiescent current drawn by the input
pin when the BIAS pin is held at 5V with switching disabled. Bias supply
current is the current drawn by the BIAS pin when the BIAS pin is held
at 5V. Total input referred supply current is calculated by summing input
supply current (IVIN) with a fraction of bias supply current (IBIAS):
ITOTAL = IVIN + (IBIAS)(VOUT/VIN)
With VIN = 15V, VOUT = 5V, IVIN = 1.4mA, IBIAS = 2.9mA, ITOTAL = 2.4mA.
ELECTRICAL CHARACTERISTICS The ● denotes the specications which apply over the full operating
temperature range, otherwise specications are at TJ = 25°C. VIN = 15V, VC = 1.5V, SHDN = 1V, BOOST = Open Circuit,
SW = Open Circuit, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Switch Duty Cycle (LT3430-1)
●
96
94
98
%
Switch Frequency (LT3430)
VC Set to Give DC = 50%
●
184
172
200
216
228
kHz
Switch Frequency (LT3430-1)
●
88
85
100
115
120
kHz
fSW Line Regulation
5.5V ≤ VIN ≤ 60V
●
0.05
0.15
%/V
fSW Shifting Threshold
Df = 10kHz
0.8
V
Minimum Input Voltage
(Note 3)
●
4.6
5.5
V
Minimum Boost Voltage
(Note 4) ISW ≤ 2.5A
●
1.8
3
V
Boost Current (Note 5)
Boost = VIN + 5V, ISW = 0.75A
Boost = VIN + 5V, ISW = 2.5A
●
25
75
50
120
mA
Input Supply Current (IVIN)
(Note 6) VBIAS = 5V
1.5
2.2
mA
Bias Supply Current (IBIAS)
(Note 6) VBIAS = 5V
3.1
4.2
mA
Shutdown Supply Current
SHDN = 0V, VIN ≤ 60V, SW = 0V, VC Open
●
30
100
200
A
Lockout Threshold
VC Open
●
2.3
2.42
2.53
V
Shutdown Threshold
VC Open, Shutting Down
VC Open, Starting Up
●
0.15
0.25
0.37
0.42
0.58
0.60
V
Minimum SYNC Amplitude
1.5
V
SYNC Frequency Range (LT3430)
228
700
kHz
SYNC Frequency Range (LT3430-1)
125
250
kHz
SYNC Input Resistance
20
kΩ
Note 7: Switch on resistance is calculated by dividing VIN to SW voltage
by the forced current (3A). See Typical Performance Characteristics for the
graph of switch voltage at other currents.
Note 8: The LT3430EFE/LT3430EFE-1 are guaranteed to meet performance
specications from 0°C to 125°C junction temperature. Specications over
the –40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LT3430IFE/LT3430IFE-1 are guaranteed over the full –40°C to 125°C
operating junction temperature range.
Note 9: See Peak Switch Current Limit vs Junction Temperature graph in
the Typical Performance Characteristics section.
Note 10: 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 specied maximum operating junction
temperature may impair device reliability.
Note 11: The maximum operational Boost-SW voltage is limited by
thermal and load current constraints. See ‘Boost Pin’ and ‘Thermal
Calculations’ in the Applications Information section.
相關(guān)PDF資料
PDF描述
LT3430EFE-1#TR 6.5 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO16
LT3430IFE-1 6.5 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO16
LT3430EFE-1 6.5 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO16
LT3467AIDDB#PBF 2.5 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO8
LT3467AIDDB 2.5 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO8
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