参数资料
型号: MAX1742EEE+T
厂商: Maxim Integrated Products
文件页数: 4/16页
文件大小: 0K
描述: IC REG BUCK SYNC 1A 16QSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: 降压(降压)
输出类型: 两者兼有
输出数: 1
输出电压: 1.5V,1.8V,2.5V,可调
输入电压: 3 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 1MHz
电流 - 输出: 1A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
包装: 带卷 (TR)
供应商设备封装: 16-QSOP
1A/2.7A, 1MHz, Step-Down Regulators with
Synchronous Rectification and Internal Switches
ELECTRICAL CHARACTERISTICS
(V IN = V CC = 3.3V, FBSEL = GND, T A = -40°C to +85°C , unless otherwise noted. Typical values are at T A = +25°C.) (Note 3)
PARAMETER
Input Voltage
SYMBOL
V IN
CONDITIONS
V IN = 3V to 5.5V,
I LOAD = 0 to 1A
FBSEL = V CC
for MAX1742,
MIN
3.0
2.475
MAX
5.5
2.575
UNITS
V
Preset Output Voltage
V OUT
I LOAD = 0 to 2.5A
FBSEL = unconnected
1.485
1.545
V
for MAX1842,
V FB = V OUT
FBSEL = REF
FBSEL = GND
1.782
1.078
1.854
1.122
Adjustable Output Voltage
Range
Reference Voltage
V REF
V IN = V CC = 3V to 5.5V, I LOAD = 0,
FBSEL = GND
V REF
1.078
V IN
1.122
V
V
PMOS Switch
On-Resistance
NMOS Switch
On-Resistance
Current-Limit Threshold
Idle Mode Current Threshold
No-Load Supply Current
FB Input Bias Current
Off-Time Default Period
R ON, P
R ON, N
I LIMIT
I IM
I IN + I CC
I FB
t OFF
I LX = 0.5A
I LX = 0.5A
MAX1742
MAX1842
MAX1742
MAX1842
V FB = 1.2V
V FB = 1.2V
R TOFF = 110k Ω
V IN = 4.5V
V IN = 3V
V IN = 4.5V
V IN = 3V
1.2
2.9
0.05
0.2
0
0.85
200
250
150
200
1.8
4.3
0.55
1.0
600
300
1.15
m Ω
A
μA
nA
μs
Note 2: Recommended operating frequency, not production tested.
Note 3: Specifications from 0°C to -40°C are guaranteed by design, not production tested.
4
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