参数资料
型号: DC1029A
厂商: Linear Technology
文件页数: 3/32页
文件大小: 0K
描述: EVAL BOARD FOR LTC2928
设计资源: DC1029A Design File
DC1029A Schematic
标准包装: 1
主要目的: 电源管理,电源监控器/跟踪器/序列发生器
嵌入式:
已用 IC / 零件: LTC2928
主要属性: 4 通道电源定序器
已供物品:
LTC2928
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C, V CC = 3.3V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Pins: V CC , H V CC
V VCC
V CC Input Supply Range
2.9
6
V
I VCC
V CC Input Supply Current
HV CC = GND
1
2.5
mA
V UVL
V UVL(HYST)
V HVCC
V CC(REG)
V CC Input Supply Undervoltage Lockout
Undervoltage Lockout Hysteresis
High Voltage Input Supply Range
Regulated V CC from HV CC
V CC Rising
V HVCC = 12V
2.75
50
7.2
3.2
2.8
100
12
3.3
2.85
150
16.5
3.4
V
mV
V
V
I REG
Regulated V CC Output Current to
External Load (Note 2)
–10
mA
I HVCC
HV CC Input Supply Current
I REG = 0mA, V HVCC = 12V
1
2
mA
Sequence Up/Down Pin: ON
V ON
V ON(HYST)
I ON(LKG)
ON Threshold Voltage
ON Hysteresis
ON Leakage Current
V ON Rising
V ON = 1V
0.985
20
1.00
30
1.015
40
±50
V
mV
nA
Voltage Monitor Pins: V1, V2, V3, V4
V MON(TH)
V SEQ(TH)
I MON(LKG)
Reset Threshold Voltage
V1 Negative Threshold Voltage
Sequencing Thresholds
0.67 V MON(TH)
0.33 V MON(TH)
0.10 V MON(TH)
Monitor Pin Leakage Current
VSEL = V CC
See Table 4
V MON = 0.55V
0.4925
0.315
0.149
0.032
0.500
0.333
0.167
0.05
0.5075
±18
0.351
0.185
0.068
±15
V
mV
V
V
V
nA
t MON(UV)
t MON(OV)
Undervoltage Pulse Width Required to
Trip Comparators
Overvoltage Pulse Width Required to
Trip ` O ` V
V MON below V MON(TH) by 1%
V MON above Overvoltage Threshold by
1%
225
225
μ s
μ s
Supply Enable Pins: EN1, EN2, EN3, EN4
V EN
Enable Pin Voltage Output in On State
I EN = –1 μ A
● V CC + 4.5
V CC +
5.5
V CC + 6
V
I EN(UP)
V EN(OL)
Enable Pin Pull-Up Current
Enable Pin Voltage Output Low
Enable Pin On, V EN ≤ (V CC + 4V)
I EN = 2.5mA
–7.5
–10
0.25
–12.5
0.4
μ A
V
Comparator Outputs : CMP1, CMP2, CMP3, CMP4
V CMP(OL)
V CMP(OH)
Comparator Voltage Output Low
Comparator Voltage Output High
(Note 4)
I CMP = 2.5mA
I CMP = –1 μ A
● V CC – 1
0.15
0.3
V
V
Three-State Selection Inputs: SQT1, SQT2, MS1, MS2, RDIS
V IL
V IH
Voltage Input Low Threshold
Voltage Input High Threshold
1.4
0.4
V
V
I HZ
High Z Pin Current
V HZ = 0.7V
V HZ = 1.1V
–10
10
μ A
μ A
Positive/Negative Selection Input: VSEL
V IL
V IH
Voltage Input Low Threshold
Voltage Input High Threshold
1.4
0.4
V
V
2928f
3
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