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MAX1793EUE33+T

更新时间： 2024-02-06 06:41:21
品牌 Logo 应用领域
美信 - MAXIM 光电二极管输出元件调节器
页数 文件大小 规格书
11页 319K
描述
Fixed/Adjustable Positive LDO Regulator, 1.25V Min, 5V Max, 0.35V Dropout, CMOS, PDSO16, 4.40 MM, 1.10 MM HEIGHT, POWER, MO-153AC, TSSOP-16

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MAX1793EUE33+T 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：TSSOP
包装说明：TSSOP, TSSOP16,.25针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：5.14可调性：FIXED/ADJUSTABLE
最大回动电压 1：0.35 V标称回动电压 1：0.21 V
最大绝对输入电压：6 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：5 mm
最大电网调整率：0.0104%最大电网调整率 (%/V)：0.015
湿度敏感等级：1功能数量：1
输出次数：1端子数量：16
工作温度TJ-Max：150 °C最高工作温度：85 °C
最低工作温度：最大输出电流 1：1 A
最大输出电压 1：5 V最小输出电压 1：1.25 V
标称输出电压 1：3.3 V封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
包装方法：TAPE AND REEL峰值回流温度（摄氏度）：260
认证状态：Not Qualified调节器类型：FIXED/ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度：1.1 mm子类别：Other Regulators
表面贴装：YES技术：CMOS
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30最大电压容差：3%
宽度：4.4 mmBase Number Matches：1

MAX1793EUE33+T 数据手册

 浏览型号MAX1793EUE33+T的Datasheet PDF文件第5页浏览型号MAX1793EUE33+T的Datasheet PDF文件第6页浏览型号MAX1793EUE33+T的Datasheet PDF文件第7页浏览型号MAX1793EUE33+T的Datasheet PDF文件第9页浏览型号MAX1793EUE33+T的Datasheet PDF文件第10页浏览型号MAX1793EUE33+T的Datasheet PDF文件第11页 
Low-Dropout, Low I , 1A Linear Regulator  
Q
Internal p-Channel Pass Transistor  
Shutdown  
The MAX1793 features a 1A p-channel MOSFET pass  
transistor. Unlike similar designs using pnp pass tran-  
sistors, p-channel MOSFETs require no base drive,  
which reduces quiescent current. pnp-based regula-  
tors also waste considerable current in dropout when  
the pass transistor saturates and use high base-drive  
currents under large loads. The MAX1793 does not suf-  
fer from these problems and consumes only 225µA of  
quiescent current under heavy loads, as well as in  
dropout.  
A logic-low on SHDN disables the MAX1793. In shut-  
down, the pass transistor, control circuitry, reference,  
and all internal circuits are turned off, reducing supply  
current to typically 0.1µA. Connect SHDN to IN for nor-  
mal operation. In shutdown, RST goes low and OUT is  
discharged to GND with a 5kΩ internal resistance.  
RST Comparator  
indicator that asserts  
MAX1793  
The MAX1793 features a low V  
OUT  
when the output voltage falls out of regulation. The  
open-drain RST output goes low when OUT falls 6ꢀ  
below its nominal output voltage. RST remains low for  
4ms after OUT has returned to its nominal value. A  
100kΩ pullup resistor from RST to a suitable logic sup-  
ply voltage (typically OUT) provides a logic control sig-  
nal. RST can be used as a power-on-reset (POR) signal  
to a microcontroller or can drive an external LED to indi-  
cate power failure. RST is low during shutdown.  
Output Voltage Selection  
The MAX1793 features Dual Mode operation. In preset  
voltage mode, the output of the MAX1793 is set to an  
internally trimmed voltage (see the Ordering  
Information). Select this mode by connecting SET to  
GND (Figure 2).  
In adjustable mode, an output is selected between  
+1.25V and +5V using two external resistors connected  
as a voltage-divider to SET (Figure 3). The output volt-  
age is determined by the following equation:  
Current Limiting  
The MAX1793 features a current limit that monitors the  
pass transistor, typically limiting short-circuit output  
current to 1.8A. The current limit is increased to  
approximately 2.8A when the output voltage is in regu-  
lation, improving performance with large transient  
loads. The output can be shorted to ground for an  
indefinite period of time without damaging the device.  
V
OUT  
= V  
[1 + (R1/R2)]  
SET  
where V  
= +1.25V. To simplify resistor selection:  
SET  
R1 = R2 [(V  
/V  
) – 1]  
OUT SET  
Since the input bias current at SET is less than 100nA,  
large resistance values can be used for R1 and R2 to  
minimize power consumption without losing efficiency.  
Up to 125kΩ is acceptable for R2.  
In preset voltage mode, the impedance from SET to  
GND should be less than 10kΩ. Otherwise, spurious  
conditions could cause the voltage at SET to exceed  
the 50mV dual-mode threshold.  
Thermal-Overload Protection  
Thermal-overload protection limits total power dissipa-  
tion in the MAX1793. When the junction temperature  
exceeds T = +170°C, a thermal sensor turns off the  
J
pass transistor, allowing the IC to cool. The thermal sen-  
sor turns the pass transistor on once the IC’s junction  
temperature drops approximately 20°C. Continuous  
short-circuit conditions will result in a pulsed output.  
IN  
OUT  
OUT  
OUT  
OUT  
RST  
IN  
OUT  
OUT  
OUT  
OUT  
RST  
SET  
IN  
IN  
IN  
= 4.7µF  
OUT  
= 6.8µF  
MAX1793  
IN  
IN  
OUT  
C = 6.8µF  
OUT  
MAX1793  
IN  
C
IN  
C
OUT  
C
= 4.7µF  
IN  
R1  
R2  
IN  
IN  
ON  
SHDN  
GND  
ON  
OFF  
RESET  
OUTPUT  
SHDN  
OFF  
RESET  
OUTPUT  
SET  
GND  
Figure 2. Typical Operating Circuit with Preset Output Voltage  
Figure 3. Typical Operating Circuit with Adjustable Output  
Voltage  
8
_______________________________________________________________________________________  
1...567891011

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