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參數資料
| 型號： | TPS51511RHLT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封裝： | ROHS COMPLIANT, PLASTIC, QFN-20 |
| 文件頁數： | 23/29頁 |
| 文件大小： | 1019K |
| 代理商： | TPS51511RHLT |
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ELECTRICAL CHARACTERISTICS
SLVS735A – FEBRUARY 2007 – REVISED APRIL 2007
over operating free-air temperature range, V
V5IN = 5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
TA =25°C; No load,
IV5IN1
Supply current 1,V5IN
VENSW= VENLDO = 5 V,
0.8
2
mA
COMP connected to capacitor
TA =25°C; No load, VENSW= 5,VENLDO = 0V,
IV5IN2
Supply current 2,V5IN
300
600
A
COMP connected to capacitor
IV5IN3
Supply current 3,V5IN
TA =25°C; No load, VENSW = 5 V, VENLDO = 0, VCOMP = 5 V
240
500
A
TA =25°C; No load,
IV5INSDN
Shutdown current, V5IN
0.1
1.0
A
VENSW = VENLDO = 0 V
TA =25°C; No load,
IVLDOIN1
Supply current1,VLDOIN
1
15
A
VENSW = VENLDO = 5 V
IVLDOIN2
Supply current 2,VLDOIN
TA =25°C; No load, VENSW = 0 V, ENLDO = 5 V,
0.1
15
A
TA =25°C; No load,
IVLDOINSDN
Standby current, VLDOIN
0.1
1
A
VENSW = VENLDO = 0 V
LDO
VLDOFB
LDO feedback voltage
–40
°C < T
A < 85°C VLDOIN = 1.8 V, VVLDO set to 1.2 V
745.6
757
768.3
mV
0 A < ILDO < 2 A, VLDOIN = 2.5 V(1), VVLDO set to 1.2 V,
V
VLDO
LDO load regulation
30
mV
0
°C < T
A < 85°C
VLDOIN = 2.5 V(1), VLDO = 1.2 V, COUT = 2×10 F, Raise the output
ILDOOC
LDO current limit
2
2.5
3.5
A
current until it is limited
IVLDOFBBIAS
LDO feedback bias current
ENLDO = 5 V, VLDOIN = 1.8 V, VLDOFB = 0.8 V
–1
–0.2
1
A
IVLDOFBLK
LDO feedback leak current
ENLDO = 0 V, VLDOIN = 1.8 V, VLDOFB = 0.8 V
–1
1
A
VVLDO = 2.5 V, IVLDO = 1 A; Reduce VLDOIN until VVLDO drops to
0.18(2)
2.425 V, TA = 25°C
VVLDO = 1.8 V, IVLDO = 1 A; Reduce VLDOIN until VVLDO drops to
RDS(ON)
Series resistance
0.16(2)
1.746 V, TA = 25°C
VVLDO = 1.2 V, IVLDO = 1 A; Reduce VLDOIN until VVLDO drops to
0.15(2)
1.164 V, TA = 25°C
IVLDODischg
VLDO discharge current
ENLDO = 0 V, VLDO = 0.5 V
10
17
40
mA
OPEN DRAIN SWITCH
Turn on threshold voltage
0.698
0.716
0.735
V
VODOFFth1
Hysteresis
38
mV
Open drain enable threshold
voltage
Second threshold voltage
1.25
V
VODOFFth2
Hysteresis
8
mV
TODOFFth1delay
Turn on threshold voltage
≥ Turn off threshold voltage
32
s
TA = 25°C; VOD = 0.5 V,
ROD
Open drain resistance
13
50
VODOFF = 0 V
IODLEAK
OD switch current leakage
TA = 25°C; VODOFF = 5 V
–1
1
A
IODOFFBIAS
Open drain enable bias current
TA = 25°C; VODOFF = 5 V
–1
1
(1)
Because of the voltage drop on the contact of the test fixture, VLDOIN is set at 2.5 V.
(2)
Ensured by design. Not production tested.
3
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