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參數資料
| 型號： | MAX8862 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Cost, Low-Dropout, Dual Linear Regulator |
| 中文描述： | 低成本、低壓差、雙線性穩(wěn)壓器 |
| 文件頁數： | 8/12頁 |
| 文件大?。?/td> | 129K |
| 代理商： | MAX8862 |
M
Output V oltage S elec tion
The MAX8862’s Dual Mode operation allows a fixed or
adjustable output voltage. In preset/internal-feedback
mode (SET1/SET2 = GND), output voltages are factory
preset to 4.95V (L), 3.175V (T), or 2.85V (R).
In adjustable/external feedback mode, output voltage is
adjusted between 2V and 11V with two external resis-
tors connected as a voltage divider to SET1/SET2
(Figure 2). Since the input bias current at SET1/SET2 is
<0.1μA, large resistance values can be used for R1
and R2 to minimize power consumption without losing
accuracy. Select R2 in the 10k
to 400k
range. R1 is
given by:
R1 = R2 (V
OUT
/ V
SET
- 1)
where V
SET
= 1.25V.
Power-Good Comparator
The MAX8862’s main regulator features a power-good
indicator that asserts when the output voltage falls out
of regulation. In internal-feedback mode, the open-
drain PWROK1 output goes low when OUT1 falls 4%
below its nominal value. When used in external feed-
back mode, PWROK1 goes low when V
SET1
falls below
1.2V. A 100k
pull-up resistor from PWROK1 to V
IN1
provides a logic-control signal. This resistor also mini-
mizes current flow to the input in case the battery is
reversed. PWROK1 can be used to reset a microcon-
troller or to drive an external LED for indicating a power
failure.
Low-Cost, Low-Dropout, Dual Linear Regulator
8
_______________________________________________________________________________________
IN2
REF2
1.25V
G1
R3
R4
OUT
GND
GND
SET1
PWROK1
OUT1
1N1
MAX8862
SET2
GND
GND
SHDN2
BIAS
80mV
SHDN1
1.25V
G1
R1
R2
BIAS
80mV
50mV
Figure 1. Functional Diagram
相關PDF資料 |
PDF描述 |
|---|---|
| MAX8862_ESE | RES 160K OHM 1/16W 5% 0402 SMD |
| MAX8863T | Low-Dropout, 100mA Linear Regulators(100mA,低壓差線性穩(wěn)壓器,SOT23封裝) |
| MAX8863R | Low-Dropout, 100mA Linear Regulators(100mA,低壓差線性穩(wěn)壓器,SOT23封裝) |
| MAX8863S | Low-Dropout, 100mA Linear Regulators(100mA,低壓差線性穩(wěn)壓器,SOT23封裝) |
| MAX8864R | Low-Dropout, 100mA Linear Regulators(100mA,低壓差線性穩(wěn)壓器,SOT23封裝) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX8862LESE | 功能描述:低壓差穩(wěn)壓器 - LDO Dual Linear Regulator 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 |
| MAX8862LESE+ | 功能描述:低壓差穩(wěn)壓器 - LDO Dual Linear Regulator 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 |
| MAX8862LESE+T | 功能描述:低壓差穩(wěn)壓器 - LDO Dual Linear Regulator 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 |
| MAX8862LESE-T | 功能描述:低壓差穩(wěn)壓器 - LDO Dual Linear Regulator 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 |
| MAX8862RCSE | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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