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參數資料
| 型號： | MAX4834 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3.3/5-V RS-485 Transceiver 8-SOIC -40 to 85 |
| 中文描述： | 250mA LDO線性穩壓器，帶有限流開關 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 350K |
| 代理商： | MAX4834 |
General Description
The MAX4834/MAX4835 family of low-dropout (LDO)
linear regulators feature an accurate current-limiting
switch with an integrated
FLAG
or
RESET
function. These
devices operate from 2.5V to 5.5V and deliver up to
250mA of load current at a preset output voltage. Preset
output voltage levels are 1.8V/2.5V/2.8V/3.0V/3.3V.
The MAX4834/MAX4835 offer a programmable soft-
start control function to eliminate false reset during
startup. The MAX4834 provides a
FLAG
function to noti-
fy the system when the load current exceeds the limit.
The MAX4835 provides a
RESET
function to notify the
system when the output drops below the threshold.
Additionally, reverse-current protection prevents cur-
rent flowing from the output to the input. Other features
include a low 90μA quiescent current, a 0.1μA shut-
down current.
The MAX4834/MAX4835 are available in space-saving
6-pin SOT23 and TDFN packages. Each device is speci-
fied over the -40°C to +85°C extended temperature
range. Contact factory for other programmed output volt-
age versions from 1.5V to 3.3V in 100mV increments.
For pin-compatible 100mA versions of this device, refer
to the MAX4832/MAX4833. For pin-compatible 500mA
versions of this device, refer to the MAX4836/MAX4837.
Applications
Notebook Computers
Cell Phones
GPS Systems
SDIO Ports and Devices
USB Ports and Devices
PDAs and Palmtop Devices
Features
Guaranteed Minimum 250mA Load Current
Accurate Current Limit
Preset Output Voltages: 1.8V/2.5V/2.8V/3.0V/3.3V
2.5V to 5.5V Supply Voltage Range
Adjustable Soft-Start
Low Dropout Voltage
Thermal Shutdown
Reverse-Current Protection
Shutdown Output Discharge (MAX4835)
Low 90μA Supply Current
Ultra-Low 0.1μA Shutdown Current
FLAG
and Latch Off (MAX4834) or
RESET
(MAX4835)
Tiny SOT23 and TDFN (3mm x 3mm) Packages
M
250mA LDO Linear Regulators with
Current-Limiting Switch
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Ordering Information
19-3373; Rev 0; 7/04
Note:
“xy” are placeholders for the output voltage levels of the
devices. Insert the values found in Table 1 at the end of this doc-
ument in the place of “xy”. The “_” is a placeholder for either the
RESET
or the
FLAG
feature. Insert “B” in the place of “_” for
RESET
and “C” for
FLAG
. “dd” is a placeholder for the reset
timeout period. Insert the values found in Table 2 in the place of
“dd.” For example, MAX4835EUT18BD2 has a 1.8V output volt-
age,
RESET
feature, and a 30ms reset timeout period. Note that
“dd” applies only to the devices with
RESET
option and does not
apply to the devices with
FLAG
option. For devices with the
FLAG
option, leave dd blank. Standard versions require a mini-
mum order increment of 2.5k units. Nonstandard versions must
be ordered in 10k unit increments. Contact factory for availability.
*
Future product—contact factory for availability.
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
6 SOT23-6
6 TDFN-6
6 SOT23-6
6 TDFN-6
MAX4834
EUTxy_-T*
MAX4834ETTxy_-T
MAX4835
EUTxy_dd-T*
MAX4835ETTxy_dd-T
6
OUT
5
SS
4
RESET
(FLAG)
1
2
GND
3
SHDN
MAX4834/MAX4835
IN
TDFN
EXPOSED PADDLE
TOP VIEW
( ) MAX4834ETTxyC ONLY.
Pin Configurations continued at end of data sheet.
Pin Configurations
Tables 1 and 2 and Selector Guide appear at end of data
sheet.
相關PDF資料 |
PDF描述 |
|---|---|
| MAX4835 | 3.3/5-V RS-485 Transceiver 8-SOIC -40 to 85 |
| MAX4834ETT25C-T | CONECTOR |
| MAX4834ETT28C-T | 250mA LDO Linear Regulators with Current-Limiting Switch |
| MAX4834ETT30C-T | 250mA LDO Linear Regulators with Current-Limiting Switch |
| MAX4834ETT33C-T | 250mA LDO Linear Regulators with Current-Limiting Switch |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX4834ETT18C | 制造商:Maxim Integrated Products 功能描述:250MA LDOS WITH CURRENT-LIMITING SW - Rail/Tube |
| MAX4834ETT18C+T | 功能描述:低壓差穩壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX4834ETT18C-T | 功能描述:低壓差穩壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX4834ETT25C | 制造商:Maxim Integrated Products 功能描述:250MA LDOS WITH CURRENT-LIMITING SW - Rail/Tube |
| MAX4834ETT25C+T | 功能描述:低壓差穩壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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