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参数资料
| 型号： | MAX16975AAEE/V+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/17页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 5V/ADJ 16QSOP |
| 其它有关文件： | Automotive Product Guide |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 降压（降压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 5V，1 V ~ 10 V |
| 输入电压： | 3.5 V ~ 28 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 220kHz ~ 1MHz |
| 电流 - 输出： | 1.2A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-LSSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 16-QSOP 裸露焊盘 |
MAX16975
28V, 1.2A Automotive Step-Down Converter
with Low Operating Current
ELECTRICAL CHARACTERISTICS* (continued)
(V SUP = V SUPSW = 14V, V EN = 14V, L1 = 22 F H, C IN = 4.7 F F, C OUT = 100 F F, C BIAS = 1 F F, C BST = 0.1 F F, C CRES = 1nF, R FOSC =
61.9k I , T A = T J = -40 N C to +125 N C, unless otherwise noted. Typical values are at T A = +25 N C.)
PARAMETER
BST Input Current
LX Current Limit
SYMBOL
I BST
I LX
CONDITIONS
V BST - V LX = 5V
V SUP = 4.5V to 28V, V SUPSW = 14V,
T A = +25 ° C
MIN
1.5
TYP
1.7
1.8
MAX
2.5
2.0
UNITS
mA
A
V SUP = 4.5V to 28V, V SUPSW = 14V
1.5
1.8
Skip-Mode Current Threshold
I SKIP_TH
200
mA
Power-Switch On-Resistance
LX Leakage Current
R ON
I LX,LEAK
R ON measured between SUPSW and LX, I LX =
1A, V SUP = 4.5V to 28V, V BST - V LX = 4.5V
V SUPSW = 28V, V LX = 0V, T A = +25 ° C
300
0.01
550
1
m I
F A
TRANSCONDUCTANCE AMPLIFIER (COMP)
FB Input Current
I FB
20
nA
FB Regulation Voltage
FB Line Regulation
Transconductance (from FB to
COMP)
V FB
D V LINE
g m
FB connected to an external resistive divider,
T A = +25 ° C
FB connected to an external resistive divider,
-40 ° C P T A P +125 ° C
4.5V < V SUP < 28V
V FB = 1V, V BIAS = 5V
0.99
0.985
1.0
1.0
0.02
1000
1.01
1.015
V
%/V
F S
Minimum On-Time
Cold-Crank Event Duty Cycle
t ON
DC CC
110
94
ns
%
OSCILLATOR FREQUENCY
R FOSC = 25.5k I , V SUP = 4.5V to 28V
1.0
MHz
Oscillator Frequency
R FOSC = 61.9k I , V SUP = 4.5V to 28V
R FOSC = 120k I , V SUP = 4.5V to 28V (Note 3)
348
191
400
220
452
249
kHz
kHz
Oscillator Frequency Range
f OSC
(Note 3)
220
1000
kHz
EXTERNAL CLOCK INPUT (FSYNC)
External Input Clock Acquisition
Time
External Input Clock Frequency
t FSYNC
(Note 3)
f OSC +
10%
1
Cycles
Hz
External Input Clock High Threshold V FSYNC_HI V FSYNC rising
External Input Clock Low Threshold V FSYNC_LO V FSYNC falling
1.4
0.4
V
V
FSYNC Pulldown Resistance
R FSYNC
500
k I
Soft-Start Time
t SS
f SW = 400kHz
f SW = 1.0MHz
4
1.6
ms
ms
ENABLE INPUT (EN)
Enable On Threshold Voltage Low
Maxim Integrated
V EN_LO
0.8
V
3
* The parametric values (min, typ, max limits) shown in the Electrical Characteristics table supersede values quoted elsewhere in this data sheet.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16975AEE/V+ | 功能描述:直流/直流开关转换器 28V 1A 2MHz Step Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX16975AEE/V+T | 功能描述:直流/直流开关转换器 28V 1A 2MHz Step Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX16975BAEE/V+ | 功能描述:直流/直流开关转换器 28V 1A 2MHz Step Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX16975BAEE/V+CG | 制造商:Maxim Integrated Products 功能描述:28V, 1.2A AUTOMOTIVE STEP-DOWN CONVERTER WITH LOW OPERATING - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC REG BUCK SYNC 5V/ADJ 16QSOP |
| MAX16975BAEE/V+T | 功能描述:直流/直流开关转换器 28V 1A 2MHz Step Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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