参数资料
| 型号： | MAX1819EBL33+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V/ADJ .5A 6-UCSP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 3.3V，1.25 V ~ 5 V |
| 输入电压： | 2.5 V ~ 5.5 V |
| 电压 - 压降（标准）： | 0.133V @ 500mA，- |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA（最小） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFBGA，CSPBGA |
| 供应商设备封装： | 6-uCSP（1.57x1.16） |
| 包装： | 带卷 (TR) |
500mA Low-Dropout Linear Regulator in UCSP
V IN = 2.5V TO 5.5V
C IN
1 μ F
IN
MOSFET
DRIVER WITH
I LIM
THERMAL
SENSOR
OUT
V OUT = 1.25V TO 5V
ON
SHDN
C OUT
3.3 μ F
OFF
LOGIC SUPPLY
SHUTDOWN
LOGIC
ERROR
AMPLIFIER
V REF
1.25V
5k ?
R1
VOLTAGE (V OUT )
R POK
100k ?
MAX1819
TO
μ C
POK
93% V REF
100mV
SET
R2
GND
Figure 1. Functional Diagram
Additional blocks include an output current limiter, ther-
mal sensor, and shutdown logic.
Internal P-Channel Pass Transistor
The MAX1819 features a 0.25 ? P-channel MOSFET
pass transistor. Unlike similar designs using PNP pass
transistors, 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 MAX1819 does not suf-
fer from these problems and consumes only 125μA of
quiescent current under heavy loads as well as in
dropout.
Output Voltage Selection
The MAX1819’s Dual Mode allows operation in either a
preset voltage mode or an adjustable mode. Connect
SET to GND to select the preset output voltage. The
two-digit part number suffix identifies the output voltage
(see the Selector Guide) . For example, the
MAX1819EBL33 has a preset 3.3V output voltage.
The output voltage may also be adjusted by connecting
a voltage-divider from OUT to SET to GND (Figure 2).
Select R2 in the 25k ? to 100k ? range. Calculate R1
with the following equation:
R1 = R2 [(V OUT / V SET ) - 1]
where V SET = 1.25V, and V OUT may range from 1.25V
to 5V.
Shutdown
Pull SHDN low to enter shutdown. During shutdown, the
output is disconnected from the input and supply cur-
rent drops to 0.1μA. When in shutdown, POK and OUT
pull low. SHDN can be pulled as high as 6V, regardless
of the input and output voltage.
6
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相关代理商/技术参数 |
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| MAX1819EBL50 | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX1819EBL50+T | 功能描述:低压差稳压器 - LDO 500mA Low-Dropout Linear Regulator in UCSP RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX1819EBL50-T | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX1819EVKIT | 功能描述:低压差稳压器 - LDO MAX1819 EVAL KIT RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX181ACPL | 功能描述:数据转换系统 Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 转换速率:0.001 MSPs 分辨率:24 bit 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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