參數(shù)資料
型號: TPS2157IDGQ
廠商: Texas Instruments, Inc.
英文描述: 3.3-V LDO AND DUAL SWITCH FOR USB BUS-POWERED HUB POWER MANAGEMENT
中文描述: 3.3V的穩(wěn)壓器和雙USB總線開關(guān)電源的集線器,電源管理
文件頁數(shù): 5/19頁
文件大小: 268K
代理商: TPS2157IDGQ
TPS2149
TPS2159
SLVS401
AUGUST 2001
5
www.ti.com
electrical characteristics over recommended operating junction-temperature range,
2.9 V
V
I(VIN)
5.5 V, V
I(ENx)
= 0 V, T
J
=
40
°
C to 100
°
C (unless otherwise noted)
enable input, ENx (active low)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIH
VIL
II
High-level input voltage
2
V
Low-level input voltage
0.8
V
μ
A
Input current, pullup (source)
VI(ENx) = 0 V
5
enable input, ENx (active high)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIH
VIL
II
High-level input voltage
2
V
Low-level input voltage
0.8
V
μ
A
Input current, pulldown (sink)
VI(ENx) = 5 V
5
logic output, OC
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Current sinking at VO = 0.4 V
1
mA
thermal shutdown characteristics
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
First thermal shutdown (shuts down switch or regulator
in overcurrent)
Occurs at or above specified temperature
when overcurrent is present.
120
Recovery from thermal shutdown
110
°
C
Second thermal shutdown (shuts down all switches and
regulator)
Occurs on rising temperature, irrespective of
overcurrent.
155
Second thermal shutdown hysteresis
10
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