- 您现在的位置：买卖IC网 > PDF目录19851 > MAX15028ATB+T (Maxim Integrated)IC REG LDO ADJ 1A 10-TDFN PDF资料下载
参数资料
| 型号： | MAX15028ATB+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 9/11页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 1A 10-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.5 V ~ 3.3 V |
| 输入电压： | 1.43 V ~ 3.6 V |
| 电压 - 压降（标准）： | 0.075V @ 1A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1A |
| 电流 - 限制（最小）： | 1.4A |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN-EP（3x3） |
| 包装： | 标准包装 |
| 其它名称： | MAX15028ATB+TDKR |
1.425V to 3.6V Input, 1A Low-Dropout
Regulators with BIAS Input
C OUT OUT ( MAX ) × ?
? 1 μ F ?
? 0 . 25 A ?
Capacitor Selection and
Regulator Stability
Capacitors are required at the MAX15027/MAX15028’s
inputs and outputs for stable operation over the full
temperature range and with load currents up to 1A.
Connect a 1μF capacitor between IN and ground and a
4.7μF capacitor with low equivalent series resistance
(ESR) between OUT and ground for 1A output current.
The input capacitor (C IN ) lowers the source impedance
of the input supply. If input supply source impedance is
high, place a larger input capacitor close to IN to pre-
vent V IN sagging due to load transients. Smaller output
capacitors can be used for output currents less than
1A. Calculate the minimum C OUT as follows:
= I ?
Operating Region and
Power Dissipation
The maximum power dissipation depends on the ther-
mal resistance of the IC package and circuit board, the
temperature difference between the die junction and
ambient air, and the rate of airflow. The power dissipat-
ed in the device is P DISS = I OUT (V IN - V OUT ). The
package features an exposed thermal pad on its
underside. This pad lowers the thermal resistance of
the package by providing a direct heat conduction
path from the die to the PCB. Connect the exposed
backside pad and GND to the system ground using a
large pad or ground plane and multiple vias to the
ground plane layer.
Noise, PSRR, and Transient Response
The MAX15027/MAX15028 are designed to operate
with low-dropout voltages and low quiescent currents
while still maintaining good noise performance, tran-
sient response, and AC rejection (see the Typical
Operating Characteristics for a plot of Power-Supply
Rejection Ratio (PSRR) vs. Frequency). When operating
from noisy sources, improved supply-noise rejection
and transient response can be achieved by increasing
the values of the input and output bypass capacitors
and through passive filtering techniques. The
MAX15027/MAX15028 load-transient response graphs
(see the Typical Operating Characteristics) show two
components of the output response: a DC shift from the
output impedance due to the load current change, and
the transient response. A typical transient overshoot for
a step change in the load current from 300mA to
800mA is 15mV. Use ceramic output capacitors greater
than 4.7μF (up to 100μF) to attenuate the overshoot.
Layout Guidelines
The TDFN package has an exposed thermal pad on its
underside. This pad provides a low thermal resistance
path for heat transfer into the PCB. This low thermally
resistive path carries a majority of the heat away from
the IC. The PCB is effectively a heatsink for the IC. The
exposed pad should be connected to a large ground
plane for proper thermal and electrical performance.
The minimum size of the ground plane is dependent
upon many system variables. To create an efficient
path, the exposed pad should be soldered to a thermal
landing, which is connected to the ground plane by
thermal vias. The thermal landing should be at least as
large as the exposed pad.
_______________________________________________________________________________________
9
相关PDF资料 |
PDF描述 |
|---|---|
| EPM7064AETC44-10N | IC MAX 7000 CPLD 64 44-TQFP |
| EMM40DRMI | CONN EDGECARD 80POS .156 SQ WW |
| EPM3128ATC144-10N | IC MAX 3000A CPLD 128 144-TQFP |
| EPM240T100I5 | IC MAX II CPLD 240 LE 100-TQFP |
| RSM43DRSN-S288 | CONN EDGECARD 86POS DIP .156 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15029ATB/V+ | 制造商:Maxim Integrated Products 功能描述:1.425V TO 3.6V INPUT 0.5A LOW-DROP - Rail/Tube |
| MAX15029ATB/V+T | 功能描述:低压差稳压器 - LDO 1.425-3.6V .5A w/BIAS Input 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 |
| MAX15029ATB/VY+T | 制造商:Maxim Integrated Products 功能描述:1.425V TO 3.6V INPUT, 500MA LOW-DROPOUT REGULATORS WITH BIAS - Tape and Reel |
| MAX15029ATB+ | 制造商:Maxim Integrated Products 功能描述:1.425V TO 3.6V INPUT 0.5A LOW-DROP - Rail/Tube |
| MAX15029ATB+T | 功能描述:低压差稳压器 - LDO 1.425-3.6V .5A w/BIAS Input 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 |
发布紧急采购，3分钟左右您将得到回复。