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參數(shù)資料
| 型號(hào)： | LTC3625EDE-1#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO12 |
| 封裝： | 3 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-229WGED, DFN-12 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 262K |
| 代理商： | LTC3625EDE-1#TRPBF |
LTC3625/LTC3625-1
3625f
Typical perForMance characTerisTics
Buck Output Current vs RPROG
Sleep Current vs VIN
PROG Voltage and PFI Falling
Threshold vs Temperature
Buck Current Limits
vs Temperature
TA = 25°C, L1 = 3.3H, L2 = 3.3H, CIN = 10F, CTOP = CBOT, LTC3625 unless otherwise specified.
elecTrical characTerisTics
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: The LTC3625/LTC3625-1 internal switches are guaranteed to
survive up to 3A of peak current. Internal current limits will restrict peak
current to lower levels.
Note 3: The LTC3625/LTC3625-1 are tested under pulsed load conditions
such that TJ ≈ TA. The LTC3625E/LTC3625E-1 are guaranteed to meet
specifications from 0°C to 85°C junction temperature. Specifications over
the –40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LTC3625I/LTC3625I-1 are guaranteed over the –40°C to 125°C
operating junction temperature range.
The junction temperature (TJ in °C) is calculated from the ambient
temperature (TA in °C) and power dissipation (PD in Watts) according to
the formula:
TJ = TA + (PD θJA)
where
θJA (in °C/W) is the package thermal impedance.
Note 4: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. The maximum
rated junction temperature will be exceeded when this protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability or permanently damage the
device.
Note 5: Measurements are tested with CTL = 0V.
VIN (V)
2.7
3.1
0
CURRENT
(A)
10
25
IVOUT
IVIN
3.5
4.3
4.7
3625 G01
5
20
15
3.9
5.1
5.5
VOUT = 4.8V
VSEL = 0V
TEMPERATURE (°C)
–40 –25 –10 5 20 35 50 65 80 95 110 125
V PROG
(V)
1.205
1.210
1.215
3625 G02
1.195
1.180
1.220
1.200
1.190
1.185
VIN = 3.6V
RPROG = 143k
TEMPERATURE (°C)
–40 –25 –10 5 20 35 50 65 80 95 110 125
CURRENT
(mA)
1050
1100
1150
1200
3625 G03
950
800
1000
900
850
IPEAK
IVALLEY
VIN = 3.6V
RPROG = 143k
RPROG (k)
0
I BUCK
(mA)
1000
2000
3000
500
1500
2500
100
200
300
400
3625 G04
500
50
0
150
250
350
450
VIN = 3.6V
VMID = 2V
CTL = 0V
IPROG
CLAMPED
Charge Termination Error
vs Temperature
TEMPERATURE (°C)
–40
OFFSET
(%)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
95
3625 G13
5
35
65
125
80
–10
–25
20
50
110
VIN = 3.6V
SLEEP THRESHOLD
WAKE THRESHOLD
Input and Output Sleep Currents
vs Temperature
TEMPERATURE (°C)
–40
CURRENT
(A)
25
20
15
10
5
0
95
3625 G14
5
35
65
125
IVIN
80
–10
–25
20
50
110
VIN = 3.6V
VSEL = 3.6V
LTC3625-1 IVOUT
VOUT = 4.5V
LTC3625 IVOUT
VOUT = 5.3V
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