LTC2926IUFD 查看數據表（PDF） - Linear Technology
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LTC2926IUFD Datasheet PDF : 28 Pages
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LTC2926
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 3.3V unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VRAMPBUF(OH)
Tracking Channels
RAMPBUF Pin Output High Voltage
(VCC – VRAMPBUF)
IRAMPBUF = –3mA
●
60
80
mV
IERROR(%)
VTRACK
IFBn to ITRACKn Current Mismatch
(IFBn – ITRACKn)/ITRACKn • 100%
TRACK Pins Voltage
VFB(REF)
FB Pins Internal Reference Voltage
IFB(LEAK)
FB Pins Leakage Current
VFB(CLAMP)
FB Pins Clamp Voltage
Master Ramp and Supply
ITRACKn = –10µA
ITRACKn = –1mA
ITRACKn = –10µA
ITRACKn = –1mA
VTRACKn = VCC, IFBn = 0mA
VFBn = 0.8V, VCC = 5.5V
–1mA < IFBn < –1µA
●
0
±3
%
●
0
±3
%
● 0.776 0.800 0.824
V
● 0.776 0.800 0.824
V
● 0.784 0.800 0.816
V
●
0
±10
nA
● 1.7
2.0
2.4
V
ΔVMGATE
MGATE Pin External N-Channel Gate IMGATE = –1µA
Drive (VMGATE – VCC)
● 5.0
5.5
6.0
V
IMGATE(UP)
MGATE Pin Pull-Up Current
Fault Latch Clear, VON High, VMGATE = 3.3V ● –7
–10
–13
µA
IMGATE(DN)
MGATE Pin Pull-Down Current
Fault Latch Clear, VON Low, VMGATE = 3.3V ●
7
10
13
µA
IMGATE(FAULT)
MGATE Pin Fault Pull-Down Current Fault Latch Set, VON High, VMGATE = 5.5V,
●
5
20
50
mA
VCC = 5.5V
Slave Supplies
ΔVSGATE
SGATE Pins External N-Channel Gate ISGATEn = –1µA, VFBn = 0.75V
Drive (VSGATEn – VCC)
● 5.0
5.5
6.0
V
ISGATE(UP)
SGATE Pins Pull-Up Current
Fault Latch Clear, VFBn = VFB(REF) – 10mV, ● –6
–10
–13
µA
VSGATEn = 3.3V
ISGATE(DN)
SGATE Pins Pull-Down Current
Fault Latch Clear, VFBn = VFB(REF) + 10mV, ●
6
10
13
µA
VSGATEn = 3.3V
ISGATE(UPFST)
SGATE Pins Fast Pull-Up Current
Fault Latch Clear, VFBn = 0V, VSGATEn = 3.3V ● –21
–30
–39
µA
ISGATE(DNFST)
SGATE Pins Fast Pull-Down Current Fault Latch Clear, VFBn = 1V, VSGATEn = 3.3V ● 21
30
39
µA
ISGATE(FAULT)
SGATE Pins Fault Pull-Down Current Fault Latch Set, VON High, VSGATEn = 5.5V, ●
5
20
50
mA
VCC = 5.5V
Remote Sense Switches
ΔVRSGATE
RSGATE Pin External N-Channel Gate IRSGATE = –1µA
Drive (VRSGATE – VCC)
● 5.0
5.5
6.0
V
IRSGATE(UP)
RSGATE Pin Pull-Up Current
Fault Latch Clear, Switches On, VRSGATE = 0V ● –7
–10
–13
µA
IRSGATE(DN)
RSGATE Pin Pull-Down Current
Fault Latch Clear, Switches Off,
VRSGATE = 3.3V
●
7
10
13
µA
IRSGATE(FAULT)
RSGATE Pin Fault Pull-Down Current Fault Latch Set, Switches Off,
VRSGATE = 5.5V, VCC = 5.5V
●
5
20
50
mA
VRSGATE(TH)
RSGATE Pin Threshold Voltage
Ramping Completed on Pin Low, RSGATE ● 1.10 1.23 1.36
V
Falling
RSW(ON)
Remote Sense Switch On-Resistance Switches On, VDn = VCC + 0.3V, ISn = –10mA ●
2
10
Ω
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: All currents into the device pins are positive; all currents out of
the device pins are negative. All voltages are referenced to ground unless
otherwise specified.
Note 3: The MGATE, SGATE1, SGATE2, RSGATE and STATUS/PGI pins are
internally limited to a minimum of 11.5V. Driving these pins to voltages
beyond the clamp level may damage the part.
2926fa
4
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