参数资料
型号: LTC2919HDDB-2.5#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10
封装: 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-10
文件页数: 10/16页
文件大小: 195K
代理商: LTC2919HDDB-2.5#PBF
LTC2919
3
2919f
The denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VCC = 2.5V (LTC2919-2.5), VCC = 3.3V (LTC2919-3.3), VCC = 5V
(LTC2919-5), ADJ1 = ADJ2 = 0.55V, SEL = oating, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC(MIN)
Operating Supply Voltage
RST, OUT1, OUT2 in Correct State
0.5
V
VCC(SHUNT)
VCC Shunt Regulation Voltage
ICC = 1mA, IREF = 0
6.0
6.5
7.1
V
ICC
VCC Input Current
2.175V < VCC < 6V (C-Grade, I-Grade)
2.175V < VCC < 6V (H-Grade)
50
220
280
μA
VRT
ADJ Input Threshold
495.0
492.5
500
505.0
507.5
mV
ΔVRT
ADJ Hysteresis (Note 4)
TMR = VCC
1.5
3.5
10.0
mV
IADJ
ADJ Input Current
VADJ = 0.55V (C-Grade, I-Grade)
VADJ = 0.55V (H-Grade)
0
±15
±40
nA
VCC(UVLO)
VCC –10% UVLO Threshold
LTC2919-2.5
LTC2919-3.3
LTC2919-5
2.175
2.871
4.350
2.213
2.921
4.425
2.250
2.970
4.500
V
ΔVCC(UVLO)
UVLO Hysteresis (Note 4)
TMR = VCC
0.3
0.7
2.0
%
VREF
Buffered Reference Voltage
VCC > 2.175V, IREF = ±1mA
0.990
0.985
1.000
1.010
1.015
V
ITMR(UP)
TMR Pull-Up Current
VTMR = 1V
–1.5
–2.2
–2.9
μA
ITMR(DOWN)
TMR Pull-Down Current
VTMR = 1V
1.5
2.2
2.9
μA
tRST(EXT)
Reset Timeout Period, External
CTMR = 2.2nF
15
20
27
ms
tRST(INT)
Reset Timeout Period, Internal
VTMR = 0V
140
200
280
ms
VTMR(DIS)
Timer Disable Voltage
VTMR Rising
VCC
– 0.40
VCC
– 0.20
VCC
– 0.10
V
ΔVTMR(DIS)
Timer Disable Hysteresis
VTMR Falling
40
100
160
mV
VTMR(INT)
Timer Internal Mode Voltage
VTMR Falling
0.10
0.20
0.40
V
ΔVTMR(INT)
Timer Internal Mode Hysteresis
VTMR Rising
40
100
160
mV
tPROP
ADJx Comparator Propagation Delay to
OUTX
ADJx Driven Beyond Threshold (VRTX) by
5mV
50
150
800
μs
tUV
VCC Undervoltage Detect to RST
VCC Less Than UVLO Threshold
(VCC(UVLO)) by 1%
50
150
800
μs
VOL
Output Voltage Low
VCC = 0.5V, I = 5μA
VCC = 1V, I = 100μA
VCC = 3V, I = 2500μA
0
0.01
0.10
0.15
0.30
V
IOH
Output Voltage High Leakage
Output = VCC (C-Grade, I-Grade)
Output = VCC (H-Grade)
0
±1
±5
μA
Three-State Input SEL
VIL
Low Level Input Voltage
0
0.4
V
VIH
High Level Input Voltage
1.4
VCC
V
VZ
Pin Voltage when Left in Open State
ISEL = 0μA
0.8
0.9
1.0
V
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