參數(shù)資料
型號(hào)： UCC3927
廠(chǎng)商： Texas Instruments, Inc.
元件分類(lèi)： 基準(zhǔn)電壓源/電流源
英文描述： HIGH-VOLTAGE HOT-SWAP POWER MANAGER
中文描述： 高壓熱插拔電源管理器
文件頁(yè)數(shù)： 7/10頁(yè)
文件大?。?/td> 153K
代理商： UCC3927
SLUS471 – NOVEMBER 2000
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating junction temperature range,
–VIN to GND = –48 V, ON to GND = 2.8 V, INSA = INSB = –VIN, ISENS = –VIN, UVLO = 2.5 V, OVLO
= VIN, all outputs unloaded (unless otherwise noted)
power fet drive
PARAMETER
TEST CONDITIONS (See Note 1)
MIN
TYP
MAX
UNIT
GATE output voltage
VISENS = 0 V
VISENS = 0.1 V
ON = high,
10
12
14
V
GATE pulldown current in fault
100
250
mA
ISENS input current
0 V < VISENS < 0.1 V
–1
1
μ
A
timers
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IRAMP pullup current during start
ON = high,
0 V < VIRAMP < 5 V
10
μ
A
IRAMP low voltage
ON = low
2
mV
IRAMP to ISENS gain
ON = high,
0 V < VIRAMP < 5 V
VIRAMP = 0 V
0.01
V/V
IRAMP offset voltage referred to ISENS
ON = high,
–2
2
mV
IRAMP clamp voltage referred to ISENS
ON = high
45
50
55
mV
FLTTIME pullup current during current
limit
ON = high,
Fault latch not set
10
μ
A
FLTTIME low voltage
ON = low
10
mV
FLTTIME fault threshold voltage
ON = high,
VISENS = 0.1 V
3.75
4.00
4.25
V
FLTTIME discharge current
ON = low
10
mA
SEQTIME pullup current
ON = high,
VIRAMP = 5 V, VISENS = 0 V
10
μ
A
SEQTIME low-level input voltage
ON = low
10
mV
SEQTIME to PG2 threshold voltage
ON = high,
VIRAMP = 5 V, VISENS = 0 V
VIRAMP = 5 V, VISENS = 0 V
VIRAMP = 5 V, VISENS = 0 V
VIRAMP = 5 V, VISENS = 0 V
0.9
1.0
1.1
V
SEQTIME to PG3 threshold voltage
ON = high,
1.9
2.0
2.1
V
SEQTIME to PG4 threshold voltage
ON = high,
2.9
3.0
3.1
V
SEQTIME to PG5 threshold voltage
ON = high,
3.9
4.0
4.1
V
SEQTIME discharge current
ON = low
10
mA
power good
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PG1, PG2, PG3, PG4, PG5 on
resistance
ON = high,
VISENS = 0 V
To PG1 rising
VSEQTIME = 5 V,
100
DRAINSENS threshold voltage
0.85
1.00
1.15
V
DRAINSENS pullup current
DRAINSENS = –VIN
10
μ
A
fault output
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
FAULT on resistance
ON = high,
VFLTTIME = 5 V
VISENS = 0.1 V,
100
P
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