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PDF MAX17651 Data sheet ( Hoja de datos )
| Número de pieza | MAX17651 | |
| Descripción | Linear Regulator | |
| Fabricantes | Maxim Integrated | |
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Hay una vista previa y un enlace de descarga de MAX17651 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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MAX17651
60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
General Description
The MAX17651 ultra-low quiescent current, high-voltage
linear regulator is ideal for use in industrial and battery-
operated systems. The device operates from a 4V to 60V
input voltage, delivers up to 100mA of load current, and
consumes only 8μA of quiescent current at no load. The
device consumes only 0.9μA current when in shutdown.
Output voltage is adjustable in the 0.6V to 59V voltage
range. Feedback voltage accuracy is ±2% over temperature.
An open-drain, active-low PGOOD pin provides a power-
good signal to the system upon achieving successful
regulation of the output voltage. The device also incorporates
an enable pin (EN) that allows the user to turn the part
on or off. The device has a thermal shutdown feature that
shuts down the part when the die temperature exceeds
165°C. The MAX17651 operates over the -40°C to
+125°C industrial temperature range and is available in a
6 lead, compact TSOT package.
Applications
●● Low-Current Industrial Power Supplies
●● Battery-Powered Equipment
●● Post Regulator for Switching Power Supplies
●● Utility Meters
●● Remote Sensors
Benefits and Features
●● Extremely Easy to Use
• Only 4 External Components Required
• Stable with Tiny 4.7μF, 0805 Output Capacitor
• All Ceramic Capacitors, Compact Layout
●● Reduces Number of Linear Regulators to Stock
• Wide 4V to 60V Input Voltage Range
• Adjustable 0.6V to 59V Output
• Up to 100mA Load Current Capability
●● Operates Reliably in Adverse Industrial Environments
• Built-In Output Voltage Monitoring with PGOOD Pin
• High-Voltage ENABLE Input
• Low 8μA Quiescent Current
• Low Dropout Voltage of 300mV at 100mA
• Overload Protection
• Overtemperature Protection
• -40°C to +125°C Operation
Ordering Information appears at end of data sheet.
Application Circuit for 5V Output
VOUT
5.5V TO 60V
CIN
0.1µF
IN
EN MAX17651
GND
OUT
PGOOD
FB
COUT
4.7µF
VOUT
5V
R1
432kΩ
R2
59kΩ
19-7454; Rev 1; 3/16
1 page  
MAX17651
Pin Configuration
60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
TOP VIEW
+
EN 1
6 FB
GND 2 MAX17651 5 PGOOD
IN 3
4 OUT
TSOT
Pin Description
PIN NAME
1 EN
2 GND
3 IN
4 OUT
5 PGOOD
6 FB
Functional Diagram
FUNCTION
Active-High, Enable Input. Force EN high (or connect to IN) to turn the regulator on. Pull EN to GND
to place the device in a low-power shutdown mode.
Ground. Connect GND to the ground plane.
Power-Supply Input. Decouple to GND with a 0.1µF capacitor; place the capacitor close to the IN
and GND pins.
Regulator Output. Connect at least 4.7µF, 0805 capacitor from OUT to GND.
Open-Drain PGOOD Output. Pull up PGOOD to an external power supply. PGOOD pulls low if FB
drops below 89% of its set value. PGOOD goes high after FB rises above 92% of its set value. The
PGOOD pin can be left floating if not used.
Output Feedback Connection. Connect FB to a resistor divider between VOUT and GND to adjust
the output voltage from 0.6V to 59V.
OUT
THERMAL
PROTECTION
FET DRIVER WITH
IN CURRENT LIMIT
EN
CONTROL
LOGIC
MAX17651
BANDGAP
REF = 0.6V
FB
PGOOD
Figure 1. Block Diagram
www.maximintegrated.com
GND
Maxim Integrated │ 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MAX17651.PDF ] | |
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