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参数资料
| 型号： | MAX1589AEZT |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | Low-Input-Voltage, 500mA LDO Regulator with RESET in SOT and TDFN |
| 中文描述： | 低输入电压、500mA LDO稳压器，带有/RESET输出，SOT或TDFN封装 |
| 文件页数： | 8/12页 |
| 文件大小： | 376K |
| 代理商： | MAX1589AEZT |
M
capacitors to reduce noise and improve load-transient
response, stability, and power-supply rejection.
The output capacitor
’
s equivalent series resistance
(ESR) affects stability and output noise. Use output
capacitors with an ESR of 30m
or less to ensure sta-
bility and optimize transient response. Surface-mount
ceramic capacitors have very low ESR and are com-
monly available in values up to 10μF. Connect C
IN
and
C
OUT
as close to the MAX1589A as possible to mini-
mize the impact of PC board trace inductance.
Noise, PSRR, and Transient Response
The MAX1589A is designed to operate with low dropout
voltages and low quiescent currents in battery-powered
systems, while still maintaining good noise, transient
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 MAX1589A load-transient response (see the
Typical Operating Characteristics
) shows two compo-
nents of the output response: a near-zero DC shift from
the output impedance due to the load-current change,
and the transient response. A typical transient response
for a step change in the load current from 100mA to
500mA is 35mV. Increasing the output capacitor
’
s value
and decreasing the ESR attenuates the overshoot.
Input-Output (Dropout) Voltage
A regulator
’
s minimum input-output voltage difference
(dropout voltage) determines the lowest usable supply
voltage. In battery-powered systems, this determines
the useful end-of-life battery voltage. Because the
MAX1589A uses a p-channel MOSFET pass transistor, its
dropout voltage is a function of drain-to-source on-resis-
tance (R
DS(ON)
= 0.33
) multiplied by the load current
(see the
Typical Operating Characteristics
):
V
DROPOUT
= V
IN
- V
OUT
= 0.33
I
OUT
The MAX1589A ground current reduces to 70μA in
dropout.
Chip Information
TRANSISTOR COUNT: 2556
PROCESS: BiCMOS
Low-Input-Voltage, 500mA LDO Regulator
with
RESET
in SOT and TDFN
8
_______________________________________________________________________________________
Figure 2. Power Operating Regions for 6-Pin SOT23: Maximum
Output Current vs. Input Voltage
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
(POWER DISSIPATION LIMIT)
(V
IN
- V
OUT
) (V)
M
2.5
2.0
1.5
1.0
0.5
0
3.0
MAXIMUM RECOMMENDED
OUTPUT CURRENT 6-PIN SOT23
T
A
= +85
°
C
T
A
= +70
°
C
M
100
200
300
400
500
600
0
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
(POWER DISSIPATION LIMIT)
(V
IN
- V
OUT
) (V)
M
2.5
2.0
1.5
1.0
0.5
0
3.0
MAXIMUM RECOMMENDED
OUTPUT CURRENT 6-PIN TDFN
T
A
= +85
°
C
M
100
200
300
400
500
600
0
Figure 3. Power Operating Region for 6-Pin TDFN: Maximum
Output Current vs. Input Voltage
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1589EZT120-T | Low-Input-Voltage, 500mA LDO Regulator with RESETin SOT and TDFN |
| MAX1589ETT075 | Low-Input-Voltage, 500mA LDO Regulator with RESETin SOT and TDFN |
| MAX1589ETT100 | Low-Input-Voltage, 500mA LDO Regulator with RESETin SOT and TDFN |
| MAX1589ETT120 | Low-Input-Voltage, 500mA LDO Regulator with RESETin SOT and TDFN |
| MAX1589ETT130 | Low-Input-Voltage, 500mA LDO Regulator with RESETin SOT and TDFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1589AEZT075+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX1589AEZT075+T | 功能描述:低压差稳压器 - LDO 500mA 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 |
| MAX1589AEZT100+ | 制造商:Maxim Integrated Products 功能描述:500MA LOW VOLTAGE LINEAR REGULATOR IN TINY QFN PACKAGE - Rail/Tube |
| MAX1589AEZT100+T | 功能描述:低压差稳压器 - LDO 500mA 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 |
| MAX1589AEZT130+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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