LTC4352CMS-PBF データシートの表示（PDF） - Linear Technology
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LTC4352CMS-PBF Datasheet PDF : 16 Pages
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LTC4352
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VSOURCE = VIN, VOUT = VIN, VCC Open, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Supplies
VIN
Input Operating Range
With External 2.9V to 4.7V VCC Supply
With External 4.7V to 6V VCC Supply
l 2.9
l
0
l
0
18
V
VCC
V
18
V
VCC(EXT)
VCC External Supply Range
l 2.9
6
V
VCC(INT)
VCC Internal Regulator Voltage
l 3.5
4.1
4.7
V
IIN
VIN Supply Current
l
VIN = 0V, VCC = 5V, VOUT = 18V
l
1.4
3
mA
–10
–13
μA
ICC
External VCC Supply Current
VCC = 5V, VIN = 0V
l
1.25
2.5
mA
VCC(UVLO)
VCC Undervoltage Lockout Threshold VCC Rising
l 2.45 2.57
2.7
V
ΔVCC(HYST)
VCC Undervoltage Lockout Hysteresis
l 50
70
90
mV
Ideal Diode Control
VFWD(REG)
ΔVGATE
tON(GATE)
tOFF(GATE)
Input/Output Pins
Forward Regulation Voltage (VIN − VOUT)
MOSFET Gate Drive (VGATE – VSOURCE) VFWD = 0.1V, I = 0 and –1μA
GATE Turn-On Delay
CGATE = 10nF, VFWD = 0.2V
GATE Turn-Off Delay
CGATE = 10nF, VFWD = −0.2V
l 10
25
40
mV
l
5
6.1
7.5
V
l
0.25 0.5
μs
l
0.2
0.5
μs
VUV,OV(TH)
UV, OV Threshold Voltage
VUV Falling, VOV Rising
l 490
500
510
mV
ΔVUV,OV(HYST)
UV, OV Threshold Hysteresis
l 2.5
5
8.5
mV
VREV(TH)
REV Threshold Voltage
l 0.8
1.0
1.2
V
IUV,OV
UV, OV Current
V = 0.5V
l
0
±1
μA
IREV
REV Current
VREV = 1V
l
7
10
13
μA
IOUT
OUT Current
VOUT = 0V, 12V
l –13
200
μA
ISOURCE
SOURCE Current
VSOURCE = 0V
l
–85 –130
μA
ICPO(UP)
CPO Pull-Up Current
VCPO = VIN = 2.9V
VCPO = VIN = 18V
l –60
–90
–115
μA
l –50
–75
–100
μA
IGATE
IFLT,STAT(IN)
IFLT,STAT(UP)
VOL
VOH
ΔVGATE(ST)
VFWD(FLT)
GATE Fast Pull-Up Current
GATE Fast Pull-Down Current
GATE Off Pull-Down Current
STATUS, FAULT Leakage Current
VFWD = 0.2V, ΔVGATE = 0V, VCPO = 17V
–1.5
A
VFWD = –0.2V, ΔVGATE = 5V
1.5
A
VUV = 0V, ΔVGATE = 2.5V
l 60
100
145
μA
V = 18V
l
0
±1
μA
STATUS, FAULT Pull-Up Current
V = 0V
l –8
–10
–12
μA
STATUS, FAULT Output Low Voltage
I = 1.25mA
l
0.2
0.4
V
STATUS, FAULT Output High Voltage
MOSFET On Detect Threshold
Open MOSFET Threshold (VIN – VOUT)
I = –1μA
STATUS Pulls Low, VFWD = 50mV
FAULT Pulls Low
l VCC – 1 VCC – 0.5
V
l 0.3
0.7
1.1
V
l 200
250
300
mV
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating for extended periods may affect device reliability and
lifetime.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to GND unless otherwise
specified.
Note 3: Internal clamps limit the GATE and CPO pins to a minimum of 5V
above, and a diode below SOURCE. Driving these pins to voltages beyond
the clamp may damage the device.
4352f
3
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