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參數(shù)資料
| 型號(hào)： | L6997 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS |
| 中文描述： | 降壓控制器低電壓運(yùn)作 |
| 文件頁(yè)數(shù)： | 4/23頁(yè) |
| 文件大?。?/td> | 291K |
| 代理商： | L6997 |
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L6997
4/23
ON TIME
Ton
On time duration
V
REF
=V
SENSE OSC
=125mV
720
800
880
ns
V
REF
=V
SENSE OSC
=250mV
370
420
470
ns
V
REF
=V
SENSE OSC
=500mV
210
240
270
ns
OFF TIME
T
OFFMIN
Minimum off time
600
ns
K
OSC
/T
OFFMIN
OSC=250mV
0.3
0.33
VOLTAGE REFERENCE
VREF
Voltage Accuracy
0
μ
A < I
REF
< 100
μ
A
0.594
0.6
0.606
V
PWM COMPARATOR
Input voltage offset
-2
+2
mV
I
FB
Input Bias Current
20
nA
INTEGRATOR
INT
Over Voltage Clamp
V
SENSE
= V
CC
0.62
0.75
0.88
V
INT
Under Voltage Clamp
V
SENSE
= GND
0.45
0.55
0.65
V
Integrator Input Offset Voltage
V
SENSE
-V
REF
-4
-4
mV
I
VSENSE
Input Bias Current
20
nA
GATE DRIVERS
High side rise time
V
DR
=3.3V; C=7nF
HGATE - PHASE from 1 to 3V
50
90
ns
High side fall time
50
100
ns
Low side rise time
V
DR
=3.3V; C=14nF
LGATE from 1 to 3V
50
90
ns
Low side fall time
50
90
ns
P
GOOD
UVP/OVP PROTECTIONS
OVP
Over voltage threshold
with respect to V
REF
118
121
124
%
UVP
Under voltage threshold
67
70
73
%
PGOOD
Upper threshold
(V
SENSE
-V
REF
)
V
SENSE
rising
110
112
116
%
PGOOD
Lower threshold
(V
SENSE
-V
REF
)
V
SENSE
falling
85
88
91
%
V
PGOOD
I
Sink
=2mA
0.2
0.4
V
ELECTRICAL CHARACTERISTICS
(continued)
(V
CC
= V
DR
= 3.3V; T
amb
= 0°C to 85°C unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6997-28 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
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| L6997-9 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
| L6997D | 功能描述:DC/DC 開(kāi)關(guān)控制器 Adjustable Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| L6997DTR | 功能描述:DC/DC 開(kāi)關(guān)控制器 Adjustable Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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