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参数资料
| 型号： | MAX1842EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/16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： | 是 |
| 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
ABSOLUTE MAXIMUM RATINGS
V CC , IN to GND ........................................................-0.3V to +6V
IN to V CC .............................................................................±0.3V
GND to PGND.....................................................................±0.3V
All Other Pins to GND.................................-0.3V to (V CC + 0.3V)
LX Current (Note 1).............................................................±4.7A
REF Short Circuit to GND Duration ............................Continuous
Continuous Power Dissipation (T A = +70°C)
SSOP (derate 16.7mW/°C above +70°C;
part mounted on 1 in. 2 of 1oz. copper) ...............................1W
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
ESD Protection .....................................................................±2kV
Note 1: LX has internal clamp diodes to PGND and IN. Applications that forward-bias these diodes should take care not to exceed
the IC’s package power dissipation limits.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V IN = V CC = 3.3V, FBSEL = GND, T A = 0°C to +85°C , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
Input Voltage
SYMBOL
V IN , V CC
V IN = 3V to
5.5V,
CONDITIONS
FBSEL =
V CC
FBSEL =
T A = +25 ° C
to +85 ° C
T A = +0 ° C
to +85 ° C
T A = +25 ° C
to +85 ° C
MIN
3.0
2.500
2.487
1.500
TYP
2.525
2.525
1.515
MAX
5.5
2.550
2.563
1.530
UNITS
V
Preset Output Voltage
V OUT
I LOAD = 0
to 1A for
MAX1742,
I LOAD = 0
to 2.5A for
unconnected
FBSEL =
T A = +0 ° C
to +85 ° C
T A = +25 ° C
to +85 ° C
1.492
1.800
1.515
1.818
1.538
1.836
V
MAX1842,
V FB = V OUT
REF
FBSEL =
GND
T A = +0 ° C
to +85 ° C
T A = +25 ° C
to +85 ° C
T A = +0 ° C
to +85 ° C
1.791
1.089
1.084
1.818
1.100
1.100
1.845
1.111
1.117
Adjustable Output Voltage
Range
AC Load Regulation Error
DC Load Regulation Error
V IN = V CC = 3V to 5.5V, I LOAD = 0,
FBSEL = GND
V REF
2
0.4
V IN
V
%
%
Dropout Voltage
V DO
V IN = V CC = 3V, I LOAD = 1A
250
mV
Reference Voltage
Reference Load Regulation
PMOS Switch
On-Resistance
NMOS Switch
On-Resistance
V REF
Δ V REF
R ON, P
R ON, N
T A = +25 ° C to +85 ° C
T A = +0 ° C to +85 ° C
I REF = -1μA to +10μA
I LX = 0.5A
I LX = 0.5A
V IN = 4.5V
V IN = 3V
V IN = 4.5V
V IN = 3V
1.089
1.084
1.100
1.100
0.5
90
110
70
80
1.111
1.117
2
200
250
150
200
V
mV
m Ω
2
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