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參數(shù)資料
| 型號： | MAX830 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Step-Down, PWM, Switch-Mode DC-DC Regulators(1A，可調節(jié)電壓輸入,步降,PWM,DC-DC變換器) |
| 中文描述： | 5V/3.3V/3V/可調輸出、1A、降壓型、PWM、開關模式DC-DC穩(wěn)壓器 |
| 文件頁數(shù)： | 3/5頁 |
| 文件大?。?/td> | 52K |
| 代理商： | MAX830 |
5V/3.3V/3V/Adjustable-Output, 1A,
Step-Down, PWM, Switch-Mode DC-DC Regulators
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 25V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
_______________________________________________________________________________________
3
M
Note 2:
For switch currents between 0.2A and 1A, maximum switch-on voltage can be calculated via linear interpolation.
Note 3:
By setting the SENSE pin to 5.5V (or the FB pin to 2.5V), the V
C
pin is forced to its low clamp level and the switch duty cycle
is forced to zero, approximating the zero load condition.
Note 4:
Device shut down. Switch leakage current not included.
Note 5:
For proper regulation, total voltage from V
IN
to GND must be
≥
8V after start-up. During start-up mode, device is switching
but not regulating.
Note 6:
To avoid extremely short switch-on times, the switch frequency is internally scaled down when V
FB
or V
SENSE
is less than
1.3V. Switch current limit is tested with V
SENSE
or V
FB
adjusted to give a 1μs minimum switch-on time.
comparable to that with I
LIM
pin open.
Note 7:
Note 8:
All conditions of input voltage, output voltage, temperature, and load current.
Note 9:
FB is at the reference voltage when the MAX830 output voltage is in regulation.
R
I
LIM
1A
7.6k
1k
LIM
=
×
+
.
PARAMETER
CONDITIONS
V
C
Voltage Temperature Coefficient
MAX831
MAX832
MAX833
MAX831
MAX832
MAX833
MIN
4.85
3.20
2.90
3.0
2.5
2.2
TYP
5.00
3.30
3.00
5.0
4.2
3.8
MAX
5.15
3.40
3.10
8.0
7.0
6.5
UNIT
0% duty cycle
0% duty cycle
T
A
= +25°C
mV/°C
FB Bias Current
0.5
2.0
V
Reference Voltage
V
REF
(nominal = 2.21V) (MAX830)
T
A
= +25°C
1.5
-4
V
C
Voltage
V
V
μ
A
V
SHUT
= 5V
V
SHUT
= 0.1V (shutdown)
(shutdown)
SENSE Voltage
10
20
V
C
= 2V
8V
≤
V
IN
≤
30V
SHUT Current
0.005
0.020
%/V
Output Voltage Line Regulation
50
k
μA
SENSE Divider Resistance
T
A
= +25°C
0.10
0.20
0.50
%
SENSE Voltage Tolerance (Note 8)
V
OUT
(nominal) = 5V (MAX831),
3.3V (MAX832), or 3V (MAX833)
±0.5
±2.0
2.155
2.21
2.265
SHUT Threshold
V
%
Reference Voltage Tolerance
(Notes 8, 9)
±0.5
±1.5
T
A
= +25°C
V
FB
= V
REF
(MAX830)
V
C
= 2V (MAX830) (Note 9)
±1.0
±2.5
Typical value only. Minimum to maximum deviation in current limit will be ±30%,
±0.5
±3.0
相關PDF資料 |
PDF描述 |
|---|---|
| MAX831CWE | 5V/3.3V/3V/Adjustable-Output, 1A, Step-Down, PWM, Switch-Mode DC-DC Regulators |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX830CWE | 功能描述:直流/直流開關調節(jié)器 RoHS:否 制造商:Maxim Integrated 最大輸入電壓:30 V 開關頻率:110 KHz 輸出電壓: 輸出電流:1.7 A (Typ) 輸出端數(shù)量:1 最大工作溫度:+ 70 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-16 Wide |
| MAX830CWE+ | 功能描述:直流/直流開關調節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX830CWE+T | 功能描述:直流/直流開關調節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX830CWE-T | 功能描述:直流/直流開關調節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX831CWE | 功能描述:直流/直流開關調節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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