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參數(shù)資料
| 型號： | MAX6765 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Automotive Micropower Linear Regulators with Supervisor |
| 中文描述： | 用于汽車電子的微功耗線性穩(wěn)壓器，帶有監(jiān)控電路 |
| 文件頁數(shù)： | 15/23頁 |
| 文件大小： | 309K |
| 代理商： | MAX6765 |
M
Automotive Micropower Linear Regulators
with Supervisor
______________________________________________________________________________________
15
Regulator
The regulator accepts an input voltage from +4V to +72V.
All of the devices feature fixed output-voltage options of
+1.8V, +2.5V, +3.3V, and +5V. The MAX6767-MAX6774B
feature an adjustable output voltage set with an external
resistive-divider network connected between OUT, SET,
and GND. See Figure 1.
Enable and Hold Inputs
(MAX6767/MAX6768)
The MAX6767/MAX6768 support two logic inputs,
ENABLE (active-high) and
HOLD
(active-low), making
these devices “automotive friendly.” For example, when
the ignition key signal drives ENABLE high, the regulator
turns on and remains on even if ENABLE goes low, as
long as
HOLD
is forced low and kept low before
ENABLE goes low. In this state, releasing
HOLD
turns
the regulator output (OUT) off. This feature makes it pos-
sible to implement a self-holding circuit without external
components. Forcing ENABLE low with
HOLD
high (or
unconnected) places the MAX6767/MAX6768 into shut-
down mode, drawing 3.3μA (typ) of supply current.
Table 3 shows the state of the regulator output with
respect to the voltage level at ENABLE and
HOLD
.
Connect
HOLD
to OUT or leave it unconnected to allow
the ENABLE input to act as a standard enable/shut-
down switch for the regulator output (OUT).
Reset Output
The reset output is typically connected to the reset
input of a μP. A μP’s reset input starts or restarts the μP
in a known state. The MAX6765–MAX6774B superviso-
ry circuits provide the reset logic to prevent code-exe-
cution errors during power-up, power-down, and
brownout conditions (see the
Typical Application
Circuit
).
RESET
changes from high to low whenever the
monitored voltage drops below the reset threshold volt-
ages. Once the monitored voltage exceeds its respec-
tive reset threshold voltage(s),
RESET
remains low for
the reset timeout period, then goes high. See Table 1.
RESETIN Threshold (MAX6769/MAX6770)
The MAX6769/MAX6770 monitor the voltage on RESETIN
using an adjustable reset threshold (V
RESETIN
) set with
an external resistive voltage-divider and the internal reset
threshold V
TH
. See Table 2.
MAX6767–MAX6774B
SET
R1
R2
GND
IN
V
IN
OUT
Figure 1. Setting the Output Voltage Using a Resistive Divider
PART NUMBER
SUFFIX (_)
OUTPUT
VOLTAGE (V)
RESET
THREHOLD (V)
L
M
T
S
Z
Y
W
V
5
5
4.625
4.375
3.053
2.888
2.313
2.188
1.665
1.575
3.3
3.3
2.5
2.5
1.8
1.8
Table 2. Preset Output Voltage and Reset
Threshold
PART NUMBER
SUFFIX (_)
TIMEOUT
PERIOD
D0
D1
D2
D3
D4
75μs
3.125ms
12.5ms
50ms
200ms
Table 1. Preset Timeout Period
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6765EVKIT+ | 功能描述:電源管理IC開發(fā)工具 MAX6765 Eval Kit RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| MAX6765TTLD0+ | 制造商:Maxim Integrated Products 功能描述:REG STD LIN ADJ/FIX POS 1.8V TO 11V/5V 0.1A 6TDFN EP - Rail/Tube |
| MAX6765TTLD0+T | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) uPower Linear Regulator RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| MAX6765TTLD1+ | 制造商:Maxim Integrated Products 功能描述:REG STD LIN ADJ/FIX POS 1.8V TO 11V/5V 0.1A 6TDFN EP - Rail/Tube |
| MAX6765TTLD1+T | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) uPower Linear Regulator RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
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