參數(shù)資料
型號: TPS56221DQPR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, PDSO22
封裝: ROHS COMPLIANT, PLASTIC, SON-22
文件頁數(shù): 20/25頁
文件大?。?/td> 655K
代理商: TPS56221DQPR
SLUSAH5
– MARCH 2011
ELECTRICAL CHARACTERISTICS (continued)
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
S
POWER GOOD
Feedback upper voltage limit for
VOV
655
675
700
mV
PGOOD
Feedback lower voltage limit for
VUV
500
525
550
PGOOD
VPGD-HYST
PGOOD hysteresis voltage at FB
30
45
RPGD
PGOOD pull down resistance
VFB = 0 V, IFB = 5 mA
30
70
Ω
550 mV
< VFB < 655 mV,
IPGDLK
PGOOD leakage current
10
20
A
VPGOOD = 5 V
OUTPUT STAGE
RHI
High-side device resistance
TJ = 25°C, (VBOOT– VSW) = 5.5 V
4.5
6.5
m
Ω
RLO
Low side device resistance
TJ = 25°C
1.9
2.7
OVERCURRENT PROTECTION (OCP)
Minimum pulse time during short
tPSSC(min)
(2)
250
ns
circuit
Switch leading-edge blanking pulse
tBLNKH
(2)
150
time (high-side detection)
IOCH
OC threshold for high-side FET
TJ = 25°C, (VBOOT– VSW) = 5.5 V
45
54
65
A
IILIM
ILIM current source
TJ = 25°C
10.0
A
Programmable OC range for low side
VOCLPRO
(2)
TJ = 25°C
12
100
mV
FET
tOFF
OC retry cycles on EN/SS pin
4
Cycle
BOOT DIODE
VDFWD
Bootstrap diode forward voltage
IBOOT = 5 mA
0.8
V
THERMAL SHUTDOWN
TJSD
(2)
Junction shutdown temperature
145
C
TJSDH
(2)
Hysteresis
20
C
(2)
Ensured by design. Not production tested
4
Copyright
2011, Texas Instruments Incorporated
Product Folder Link(s) :TPS56221
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