LTC2925IUF-PBF(RevD) Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LTC2925IUF-PBF
(Rev.:RevD)
(Rev.:RevD)
Linear Technology
LTC2925IUF-PBF Datasheet PDF : 26 Pages
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LTC2925
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
VCC
Input Supply Range
ICC
Input Supply Current
IFBx = 0, ITRACKx = 0, IRAMPBUF = 0
IFBx = –1mA, ITRACKx = –1mA,
IRAMPBUF = –3mA
VCC(UVL)
Input Supply Undervoltage Lockout
VCC Rising
∆VCC(UVL, HYST) Input Supply Undervoltage Lockout Hysteresis
∆VGATE
External N-Channel Gate Drive (VGATE – VCC) IGATE = –1µA
IGATE
GATE Pin Current
Gate On, VGATE = 0V, No Faults
Gate Off, VGATE = 5V, No Faults
Gate Off, VGATE = 5V, Short-Circuit or
Power Good Timeout
l 2.9
5.5
l
1.5
3
l
10.5
15
l 2.3
2.5
2.7
25
l5
5.5
6
l –7
–10
–13
l7
10
13
l5
20
50
VON(TH)
∆VON(HYST)
VON(FC)
ION(IN)
∆VRS-SENSE(TH)
ISENSEN
ISENSEP
VOS
VFAULT(OL)
VSDx(OL)
VSTATUS(OL)
IRAMP
VRAMPBUF(OL)
VRAMPBUF(OH)
IERROR(%)
VTRACKx
IFB(LEAK)
VFB(CLAMP)
RREMOTE
ISCTMR(UP)
ISCTMR(DN)
VSCTMR(TH)
ISDTMR(UP)
VSDTMR(TH)
IPGI(UP)
VPGI(TH)
IPGTMR(UP)
VPGTMR(TH)
ON Pin Threshold Voltage
ON Pin Hysteresis
ON Pin Fault Clear Threshold Voltage
ON Pin Input Current
Sense Resistor Overcurrent Voltage Threshold
(VSENSEP – VSENSEN)
SENSEN Pin Input Current
SENSEP Pin Input Current
Ramp Buffer Offset (VRAMPBUF – VRAMP)
FAULT Output Low Voltage
SDx Output Low Voltage
STATUS Output Low Voltage
RAMP Pin Input Current
RAMPBUF Low Voltage
RAMPBUF High Voltage (VCC – VRAMPBUF )
IFBx to ITRACKx Current Mismatch
IERROR(%) = (IFBx – ITRACKx)/ITRACKx
TRACK Pin Voltage
IFB Leakage Current
VFB Clamp Voltage
REMOTE Feedback Switch Resistance
Short-Circuit Timer Pull-Up Current
Short-Circuit Timer Pull-Down Current
Short-Circuit Timer Threshold Voltage
Shutdown Timer Pull-Up Current
Shutdown Timer Threshold Voltage
Power Good Input Pull-Up Current
Power Good Input Threshold Voltage
Power Good Timer Pull-Up Current
Power Good Timer Threshold Voltage
VON Rising
VON = 1.2V, VCC = 5.5V
1V < VSENSEP < VCC
0V < VSENSEP < 1V
0V < VSENSEN < VCC
0V < VSENSEP < VCC
VRAMPBUF = VCC/2, IRAMPBUF = 0A
IFAULT = 3mA
ISDx = 1mA, VCC = 2.3
ISTATUS = 3mA
0V < RAMP < VCC, VCC = 5.5V
IRAMPBUF = 3mA
IRAMPBUF = –3mA
ITRACKx = –10µA
ITRACKx = –1mA
ITRACKx = –10µA
ITRACKx = –1mA
VFB = 1.5V, VCC = 5.5V
1µA < IFB < 1mA
2V < VREMOTE < VCC
VSCTMR = 1V
VSCTMR = 1V
VSDTMR = 1V
VPGI = 0V
VPGTMR = 1V
l 1.214
l 30
l 0.3
l
l 40
l 30
l –1
l –1
l –30
l
l
l
l
l
l
l
l
l 0.78
l 0.78
l
l 1.6
l
l –35
l1
l 1.1
l –7
l 1.1
l –5
l 0.8
l –8
l 1.1
1.232
75
0.4
0
50
50
5
5
0
0.2
0.2
0.2
0
90
100
0
0
0.8
0.8
2.1
15
–50
2
1.23
–10
1.23
–10
–10
1.23
1.250
150
0.5
±100
60
70
10
10
30
0.4
0.4
0.4
±1
150
200
±5
±5
0.82
0.82
±10
2.5
30
–65
3
1.4
–13
1.4
–15
1.4
–14
1.4
UNITS
V
mA
mA
V
mV
V
µA
µA
mA
V
mV
V
nA
mV
mV
µA
µA
mV
V
V
V
µA
mV
mV
%
%
V
V
nA
V
Ω
µA
µA
V
µA
V
µA
V
µA
V
For more information www.linear.com/LTC2925
2925fd
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