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參數(shù)資料
| 型號： | MAX1615 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Voltage, Low-Power Linear Regulators for Notebook Computers |
| 中文描述： | 高壓、低功耗線性穩(wěn)壓器，用于筆記本電腦 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 92K |
| 代理商： | MAX1615 |
_______________Detailed Desc ription
The MAX1615/MAX1616 low-quiescent-current linear
regulators are designed primarily for high input voltage
applications. The MAX1615 supplies a preselected 3.3V
or 5.0V output for loads up to 30mA. The MAX1616
provides an adjustable voltage from 1.24V to 28V. The
maximum output current is a function of the package’s
maximum power dissipation for a given temperature. A
5μA load is required to maintain output regulation.
The MAX1615’s output voltage is fed back through an
internal resistor voltage divider connected to OUT. Set
the output voltage to either 3.3V or 5.0V with the 5/
3
pin.
Select the 5V output by connecting 5/
3
to OUT, or the
3.3V output by connecting 5/
3
to GND.
The MAX1616 uses external feedback, allowing the out-
put voltage to be set by external resistors (see
Setting
the MAX1616 Output Voltage section). The typical FB
threshold is at 1.24V.
S hutdown
The device enters shutdown mode when
SHDN
is low.
In shutdown mode, the pass transistor, control circuit,
reference, and all biases turn off, reducing the supply
current to below 1μA. Connect
SHDN
to IN for automatic
start-up.
Current Limit
Output current is limited to 100mA (typical). The current
limit exceeds the 30mA (max) safe operating limit. The
output can be shorted to ground for 30 seconds without
damaging the part.
T hermal-Overload Protec tion
When the junction temperature exceeds T
J
= +150°C,
the thermal sensor sends a signal to the shutdown
logic, turning off the pass transistor and allowing the IC
to cool. The thermal sensor turns the pass transistor on
again after the IC’s junction temperature cools by
+20°C (typical), resulting in a pulsating output during
continuous thermal-overload conditions.
Operating Region and Power Dissipation
Maximum power dissipation depends on the thermal
resistance of the case and circuit board, the tempera-
ture difference between the die junction and ambient
air, and the rate of air flow. The device’s power dissipa-
M
High-Voltage, Low-Power Linear Regulators
for Notebook Computers
_______________________________________________________________________________________
5
______________________________________________________________Pin Desc ription
1
IN
Positive Input Voltage. Connect to a +4V to +28V supply.
2
GND
Ground
4
5/
3
Preset Output Voltage Select. Connect to GND for 3.3V output or to OUT
for 5.0V output.
5
SHDN
Shutdown, active low input. Connect to IN for automatic start up.
CURRENT
LIMIT
VREF
OUT
GND
SHDN
5/3
(MAX1615)
FB
(MAX1616)
IN
MAX1615
MAX1616
Figure 1. Functional Diagram
1
2
PIN
—
5
NAME
FUNCTION
MAX1615
MAX1616
3
OUT
Regulator Output
3
—
FB
Feedback Input. Regulates to 1.24V nominally.
4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1615EUK | IC-L/POW.LINEAR REGULATOR |
| MAX1616 | High-Voltage.Low-Power Linear Regulators for Notebook Computers |
| MAX1617AMEE | Remote/Local Temperature Sensor with SMBus Serial Interface |
| MAX1617A | Remote/Local Temperature Sensor with SMBus Serial Interface |
| MAX1618 | Remote Temperature Sensor with SMBus Serial Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1615AEUK | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1615AEUK-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1615EUK | 制造商:Maxim Integrated Products 功能描述:HIGH-VOLTAGE,LOW-POWER LINEAR REGULATORS FOR - Rail/Tube |
| MAX1615EUK/GH9-T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| MAX1615EUK+ | 制造商:Maxim Integrated Products 功能描述:REG LDO LIN SELECTABLE POS 3.3V/5V 0.03A 5PIN SOT-23 - Bulk 制造商:Maxim Integrated Products 功能描述:LINEAR REG L/P SMD 1615 SOT-23-5 制造商:Maxim Integrated Products 功能描述:LINEAR REG L/P, SMD, 1615, SOT-23-5 制造商:Maxim Integrated Products 功能描述:LINEAR REG L/P, SMD, 1615, SOT-23-5; Primary Input Voltage:15V; Output Voltage Fixed:5V; Dropout Voltage Vdo:350mV; Voltage Regulator Case Style:SOT-23; No. of Pins:5; Output Current:30mA; Operating Temperature Min:-40C; Operating ;RoHS Compliant: Yes 制造商:Maxim Integrated Products 功能描述:MAX1615 5V/3.3V 30mA regulator SOT23 |
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