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参数资料
型号： TPS2393PWG4
厂商： TEXAS INSTRUMENTS INC
元件分类： 电源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14
封装： GREEN, PLASTIC, TSSOP-14
文件页数： 29/33页
文件大小： 596K
代理商： TPS2393PWG4
TPS2392
TPS2393
SLUS536C AUGUST 2002 REVISED AUGUST 2004
www.ti.com
5
ELECTRICAL CHARACTERISTICS (continued)
VI(VIN) = 48 V with respect to RTN, VI(EN) = 2.8 V, VI(INSA) = 0 V, VI(INSB) = 0 V, VI(UVLO) = 2.5 V, VI(OVLO) = 0 V, VI(ISENS) = 0 V, all outputs
unloaded, TA = 40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
FAULT TIMER
VOL
Low-level output voltage, FLTTIME
VI(EN) = 0 V
5
mV
ICHG
Charging current, current limit mode
VI(ISENS) = 80 mV, VO(FLTTIME) = 2 V
55
50
45
A
VFLT
Fault threshold voltage
3.75
4.00
4.25
V
IDSG
Discharge current, retry mode
TPS2393
VI(ISENS) = 80 mV, VO(FLTTIME) = 2 V
0.38
0.61
A
D
Output duty cycle
TPS2393
VI(ISENS) = 80 mV
1.0%
1.5%
IRST
Discharge current, timer reset mode
VO(FLTTIME) = 2 V, VI(ISENS) = 0 V
1
mA
POWERGOOD SENSING
VTH
DRAINSNS threshold voltage
1.20
1.35
1.50
V
ISRC
DRAINSNS pull-up current
VI(DRAINSNS) = 0 V
14
11
8
A
IOH
High-level output leakage current, PG output
VI(EN) = 0 V, VO(PG) = 65 V
10
A
RDS(on) Driver on-resistance, PG output
VI(ISENS) = 0 V, VI(DRAINSNS) = 0 V
IO(PG) = 1 mA
50
80
FAULT OUTPUT
IOH
High-level output leakage current, FAULT
VI(EN) = 0 V, VO(FAULT) = 65 V
10
A
RDS(on) Driver on-resistance, FAULT
VI(ISENS) = 80 V, VO(FLTTIME) = 5 V
IO(FAULT) = 1 mA
50
80
(1)
All voltages are with respect to the VIN terminal, unless otherwise stated.
(2)
Currents are positive into and negative out of the specified terminals.
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
PW
DBT
I/O
DESCRIPTION
DRAINSNS
13
41
I
Sense input for monitoring the load voltage status
EN
5
14
I
Enable input to turn on/off power to the load
FAULT
4
13
O
Open-drain, active-low indication of a load fault condition
FLTTIME
6
15
I/O
Connection for user-programming of the fault timeout period
GATE
10
28
O
Gate drive for external Nchannel FET
INSA
2
1
I
Insertion detection input pin A
INSB
3
7
I
Insertion detection input pin B
IRAMP
7
16
I/O
Programming input for setting the inrush current slew rate
ISENS
9
27
I
Current sense input
OVLO
14
43
I
Voltage sense input for supply overvoltage lockout (OVLO) protection
PG
12
40
O
Open-drain, active-low indication of load power-good condition
RTN
11
34
I
Positive supply input
UVLO
1
44
I
Voltage sense input for supply undervoltage lockout (UVLO) protection
VIN
8
22
I
Negative supply input and reference pin
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