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参数资料
| 型号： | LTC3610IWP#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PQCC64 |
| 封装： | 9 X 9 MM, PLASTIC, QFN-64 |
| 文件页数： | 18/24页 |
| 文件大小： | 388K |
| 代理商： | LTC3610IWP#TR |
LTC3610
3610ff
electrical characteristics
The●denotesthespecificationswhichapplyoverthefulloperating
temperaturerange,otherwisespecificationsareatTA=25°C(Note4).VIN=15Vunlessotherwisenoted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ΔVFB(LOADREG)
Feedback Voltage Load Regulation
ITH = 0.5V to 1.9V (Note 3)
–0.05
–0.3
%
IFB
Feedback Input Current
VFB = 0.6V
–5
±50
nA
gm(EA)
Error Amplifier Transconductance
ITH = 1.2V (Note 3)
●
1.4
1.7
2
mS
VFCB
Forced Continuous Threshold
●
0.54
0.6
0.66
V
IFCB
Forced Continuous Pin Current
VFCB = 0.6V
–1
–2
A
tON
On-Time
ION = 60A, VON = 1.5V
ION = 60A, VON = 0V
170
250
120
310
ns
tON(MIN)
Minimum On-Time
ION = 180A, VON = 0V
60
100
ns
tOFF(MIN)
Minimum Off-Time
ION = 30A, VON = 1.5V
290
500
ns
IVALLEY(MAX)
Maximum Valley Current
VRNG = 0.5V, VFB = 0.56V, FCB = 0V
VRNG = 0V, VFB = 0.56V, FCB = 0V
●
7
10
16
19
A
IVALLEY(MIN)
Maximum Reverse Valley Current
VRNG = 0.5V, VFB = 0.64V, FCB = 0V
VRNG = 0V, VFB = 0.64V, FCB = 0V
–6
–9
A
ΔVFB(OV)
Output Overvoltage Fault Threshold
7
10
13
%
VRUN/SS(ON)
RUN Pin Start Threshold
●
0.8
1.5
2
V
VRUN/SS(LE)
RUN Pin Latchoff Enable Threshold
RUN/SS Pin Rising
4
4.5
V
VRUN/SS(LT)
RUN Pin Latchoff Threshold
RUN/SS Pin Falling
3.5
4.2
V
IRUN/SS(C)
Soft-Start Charge Current
VRUN/SS = 0V
–0.5
–1.2
–3
A
IRUN/SS(D)
Soft-Start Discharge Current
VRUN/SS = 4.5V, VFB = 0V
0.8
1.8
3
A
VIN(UVLO)
Undervoltage Lockout
VIN Falling
●
3.4
3.9
V
VIN(UVLOR)
Undervoltage Lockout Release
VIN Rising
●
3.5
4
V
RDS(ON)
Top Switch On-Resistance
Bottom Switch On-Resistance
12
6.5
16
10
mΩ
InternalVCCRegulator
VINTVCC
Internal VCC Voltage
6V < VIN < 28V, VEXTVCC = 4V
●
4.7
5
5.5
V
ΔVLDO(LOADREG)
Internal VCC Load Regulation
ICC = 0mA to 20mA, VEXTVCC = 4V
–0.1
±2
%
VEXTVCC
EXTVCC Switchover Voltage
ICC = 20mA, VEXTVCC Rising
●
4.5
4.7
V
ΔVEXTVCC
EXTVCC Switch Drop Voltage
ICC = 20mA, VEXTVCC = 5V
150
300
mV
ΔVEXTVCC(HYS)
EXTVCC Switchover Hysteresis
500
mV
PGOODOutput
ΔVFBH
PGOOD Upper Threshold
VFB Rising
7
10
13
%
ΔVFBL
PGOOD Lower Threshold
VFB Falling
–7
–10
–13
%
ΔVFB(HYS)
PGOOD Hysteresis
VFB Returning
1
2.5
%
VPGL
PGOOD Low Voltage
IPGOOD = 5mA
0.15
0.4
V
Note1: 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.
Note2: TJ is calculated from the ambient temperature TA and power
dissipation PD as follows:
TJ = TA + (PD 28°C/W) (θJA is simulated per JESD51-7 high effective
thermal conductivity test board)
θJC = 0.24°C/W (θJC is simulated when heat sink is applied at the
bottom of the package).
Note3: The LTC3610 is tested in a feedback loop that adjusts VFB to
achieve a specified error amplifier output voltage (ITH).
Note4: The LTC3610 is tested under pulsed load conditions such that
TJ ≈ TA. The LTC3610E is guaranteed to meet performance specifications
from 0°C to 125°C. Specifications over the –40°C to 125°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTC3610I is guaranteed over the
full –40°C to 125°C operating junction temperature range. Note that
the maximum ambient temperature is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
resistance and other environmental factors.
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