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參數(shù)資料
| 型號： | MAX1963 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Low-Input-Voltage, 300mA LDO Regulators with RESETin SOT and TDFN |
| 中文描述： | 低輸入電壓，300mA的LDO與RESETin SOT和TDFN封裝穩(wěn)壓器 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 354K |
| 代理商： | MAX1963 |
M
The MAX1963/MAX1976 deliver up to 300mA and oper-
ate with an input voltage up to +3.6V. However, when
using the 6-pin SOT23 version, high output currents
can only be sustained when the input-output differential
voltage is less than 2V, as shown in Figure 2.
The maximum allowed power dissipation for the 6-pin
TDFN is 1.951W at T
A
= +70
°
C. Figure 3 shows that the
maximum input-output differential voltage is not limited
by the TDFN package power rating.
Applications Information
Capacitor Selection and
Regulator Stability
Capacitors are required at the MAX1963/MAX1976
input and output for stable operation over the full tem-
perature range and with load currents up to 300mA.
Connect a 1μF ceramic capacitor between IN and GND
and a 4.7μF low-ESR ceramic capacitor between OUT
and GND. The input capacitor (C
IN
) lowers the source
impedance of the input supply. Use larger output
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 MAX1963/MAX1976 as possible
to minimize the impact of PC board trace inductance.
Noise, PSRR, and Transient Response
The MAX1963/MAX1976 are designed to operate with
low dropout voltages and low quiescent currents in bat-
tery-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) versus 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 MAX1963/MAX1976 load-transient response (see
the
Typical Operating Characteristics
) shows two com-
ponents 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 20mA
to 200mA is 20mV. 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
MAX1963/MAX1976 use a P-channel MOSFET pass tran-
sistor, the dropout voltage is a function of drain-to-source
on-resistance (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 MAX1963/MAX1976 ground current reduces to 70μA
in dropout.
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
8
_______________________________________________________________________________________
Chip Information
TRANSISTOR COUNT: 2556
PROCESS: BiCMOS
MAX1963
TOP MARK
MAX1976
TOP MARK
V
OUT
(V)
SUFFIX
SOT
AABA
—
—
—
AABE
AABF
AABG
—
AABH
AABI
—
AABJ
TDFN
AFQ
—
—
—
AFU
AFV
AFW
—
AFX
AFY
—
AFZ
SOT
AAAQ
AABP
AABL
AABM
AAAK
AABN
AAAL
AABO
AAAM
AAAN
AAAO
AAAP
TDFN
AGA
AHD
AGC
AGD
AGE
AGF
AGG
AHC
AGH
AGI
AGJ
AGK
0.75
0.85
1.00
1.10
1.20
1.30
1.50
1.60
1.80
2.50
2.85
3.00
075
085
100
110
120
130
150
160
180
250
285
300
Selector Guide
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1963ETT | Low-Input-Voltage, 300mA LDO Regulators with RESETin SOT and TDFN |
| MAX1963EZT | Low-Input-Voltage, 300mA LDO Regulators with RESETin SOT and TDFN |
| MAX1976 | Low-Input-Voltage, 300mA LDO Regulators with RESETin SOT and TDFN |
| MAX1976ETT | Low-Input-Voltage, 300mA LDO Regulators with RESETin SOT and TDFN |
| MAX19713 | 10-Bit, 45Msps, Full-Duplex Analog Front-End |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1963AETT120+T | 功能描述:低壓差穩(wěn)壓器 - LDO Low Input Voltage 300mA LDO Regulators with RESET in SOT and TDFN 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(jié):0.3 % 輸出端數(shù)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 |
| MAX1963AETT150+T | 功能描述:低壓差穩(wěn)壓器 - LDO Low-Input-Voltage 300mA LDO Regulators with RESET in SOT and TDFN 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(jié):0.3 % 輸出端數(shù)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 |
| MAX1963AETT180+T | 功能描述:低壓差穩(wěn)壓器 - LDO Low Input Voltage 300mA LDO Regulators with RESET in SOT and TDFN 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(jié):0.3 % 輸出端數(shù)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 |
| MAX1963AEZT090+ | 制造商:Maxim Integrated Products 功能描述:LDO REG 0.9V 0.3A 6PIN TSOT-23 - Cut Tape Product |
| MAX1963AEZT090+T | 功能描述:低壓差穩(wěn)壓器 - LDO Low-Input-Voltage 300mA LDO Regulators with RESET in SOT and TDFN 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(jié):0.3 % 輸出端數(shù)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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