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CSD97370Q5M Datasheet(PDF) 3 Page - Texas Instruments

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Part No. CSD97370Q5M
Description  Synchronous Buck NexFET Power Stage
Download  22 Pages
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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CSD97370Q5M Datasheet(HTML) 3 Page - Texas Instruments

 
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CSD97370Q5M
www.ti.com
SLPS314A
– JUNE 2011 – REVISED JUNE 2011
ELECTRICAL CHARACTERISTICS
TA = 25°C, VDD = POR to 5.5V (unless otherwise noted)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
PLOSS
VIN = 12V, VDD = 5V, VOUT = 1.2V, IOUT = 25A,
Power Loss(1)
2.8
3.3
W
fSW = 500kHz, LOUT = 0.3µH , TJ = 25°C
VIN = 12V, VDD = 5V, VOUT = 1.2V, IOUT = 40A,
Power Loss(2)
8
10
W
fSW = 500kHz, LOUT = 0.3µH , TJ = 125°C
VIN
VIN Quiescent Current (IQ)
ENABLE = 0V, VDD = 5V
100
µA
VDD
Standby Supply Current ( IDD)
ENABLE = 0V, PWM = 0V
1
5
µA
ENABLE = 5V, PWM = 50% Duty cycle,
Operating Supply Current (IDD)
16
20
mA
fSW = 500kHz
POWER-ON RESET AND UNDER VOLTAGE LOCKOUT
Power on Reset (VDD Rising)
3.6
3.9
V
UVLO (VDD Falling)
3.4
3.5
V
Hysteresis
100
250
mV
Startup Delay(3)
ENABLE = PWM = 5V
600
1000
ns
ENABLE
Logic Level Low Threshold (VIL)
0.8
1
V
Logic Level High Threshold (VIH)
1.6
2.0
V
Threshold Hysteresis
580
mV
Schmitt Trigger Input PWM = 5V (See Figure 5)
Weak Pull-down Impedance
100
k
Ω
Rising Propagation Delay (tPDH)
600
ns
Falling Propagation Delay (tPDL)
200
ns
PWM
IPWMH
PWM = 5V
620
800
µA
IPWML
PWM = 0V
–260
–340
µA
PWM Logic Level High (VPWMH )
2.2
V
PWM Logic Level Low (VPWML )
0.8
V
PWM 3-State open Voltage
1.5
V
PWM to VSW propagation delay
VDD = POR to 5.5V, CPWM = 10pF (See Figure 6)
100
ns
(tPDLH and tPDHL)
3-State Shutdown Hold-off Time (t3HT)
100
ns
3-State Shutdown Propagation Delay (t3SD)
650
ns
3-State Recovery Propagation Delay (t3RD)
75
ns
BOOTSTRAP SWITCH
Forward Voltage (VFBOOT)
VDD – VBOOT, IF = 20mA
180
360
mV
Reverse Leakage (IRBOOT)
(2)
VBOOT – VDD = 20V
0.15
1
µA
(1)
Measurement made with six 10-
µF (TDK C3216X5R1C106KT or equivalent) ceramic capacitors placed across VIN to PGND pins.
(2)
Specified by design
(3)
POR to VSW rising
Copyright
© 2011, Texas Instruments Incorporated
3


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