Datasheet LT8410, LT8410-1 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Ultralow Power Boost Converter with Output Disconnect |
| Páginas / Página | 16 / 1 — FEATURES. DESCRIPTION. Ultralow Quiescent Current. 8.5μA in Active Mode. … |
| Formato / tamaño de archivo | PDF / 329 Kb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. Ultralow Quiescent Current. 8.5μA in Active Mode. 0μA in Shutdown Mode. Comparator Built into SHDN Pin
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LT8410/LT8410-1 Ultralow Power Boost Converter with Output Disconnect
FEATURES DESCRIPTION
n
Ultralow Quiescent Current
The LT®8410/LT8410-1 are ultralow power boost converters
8.5μA in Active Mode
with integrated power switch, Schottky diode and output
0μA in Shutdown Mode
disconnect circuitry. The parts control power delivery by n
Comparator Built into SHDN Pin
varying both the peak inductor current and switch off- n
Low Noise Control Scheme
time. This control scheme results in low output voltage n
Adjustable FB Reference Voltage
ripple as well as high efficiency over a wide load range. n
Wide Input Range: 2.5V to 16V
The quiescent current is a low 8.5μA, which is further n
Wide Output Range: Up to 40V
reduced to 0μA in shutdown. The internal disconnect n
Integrated Power NPN Switch
circuitry allows the output voltage to be blocked from the
25mA Current Limit (LT8410)
input during shutdown. High value (12.4M/0.4M) resis-
8mA Current Limit (LT8410-1)
tors are integrated on chip for output voltage detection, n
Integrated Schottky Diode
significantly reducing input referred quiescent current. The n
Integrated Output Disconnect
LT8410/ LT8410-1 also features a comparator built into the n
High Value (12.4M/0.4M) Feedback Resistors SHDN pin, overvoltage protection for the CAP and VOUT Integrated pins, built in soft-start and comes in a tiny 8-pin 2mm × n
Built in Soft-Start (Optional Capacitor from VREF 2mm DFN package. to GND) L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n
Overvoltage Protection for CAP and V Technology Corporation. All other trademarks are the property of their respective owners. OUT Pins Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466, n
Tiny 8-Pin 2mm × 2mm DFN Package 6611131.
APPLICATIONS
n Sensor Power n RF Mems Relay Power n General Purpose Bias
TYPICAL APPLICATION Output Voltage Ripple General Purpose Bias with Wide Input Voltage vs Load Current Efficiency vs Load Current
V 10 100 IN 100µH 2.5V to 16V VIN = 3.6V VIN = 12V 90 2.2µF 0.1µF 8 SW CAP V V IN = 5V OUT = 16V 80 VCC VOUT 6 V LT8410 IN = 3.6V 0.1µF* CHIP V 70 REF ENABLE SHDN 4 604k EFFICIENCY (%) 60 GND FBP 0.1µF PEAK-TO-PEAK RIPPLE (mV) 2 412k V OUT 50 *HIGHER VALUE CAPACITOR IS REQUIRED WHEN THE V 8410-1 TA01a IN IS HIGHER THAN 5V 0 40 0.01 0.1 1 10 0.01 0.1 1 10 100 LOAD CURRENT (mA) 8410-1 TA02 LOAD CURRENT (mA) 8410-1 TA03 84101fc For more information www.linear.com/LT8410 1 Document Outline Description Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Features Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
FEATURES DESCRIPTION
n
Ultralow Quiescent Current
The LT®8410/LT8410-1 are ultralow power boost converters
8.5μA in Active Mode
with integrated power switch, Schottky diode and output
0μA in Shutdown Mode
disconnect circuitry. The parts control power delivery by n
Comparator Built into SHDN Pin
varying both the peak inductor current and switch off- n
Low Noise Control Scheme
time. This control scheme results in low output voltage n
Adjustable FB Reference Voltage
ripple as well as high efficiency over a wide load range. n
Wide Input Range: 2.5V to 16V
The quiescent current is a low 8.5μA, which is further n
Wide Output Range: Up to 40V
reduced to 0μA in shutdown. The internal disconnect n
Integrated Power NPN Switch
circuitry allows the output voltage to be blocked from the
25mA Current Limit (LT8410)
input during shutdown. High value (12.4M/0.4M) resis-
8mA Current Limit (LT8410-1)
tors are integrated on chip for output voltage detection, n
Integrated Schottky Diode
significantly reducing input referred quiescent current. The n
Integrated Output Disconnect
LT8410/ LT8410-1 also features a comparator built into the n
High Value (12.4M/0.4M) Feedback Resistors SHDN pin, overvoltage protection for the CAP and VOUT Integrated pins, built in soft-start and comes in a tiny 8-pin 2mm × n
Built in Soft-Start (Optional Capacitor from VREF 2mm DFN package. to GND) L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n
Overvoltage Protection for CAP and V Technology Corporation. All other trademarks are the property of their respective owners. OUT Pins Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466, n
Tiny 8-Pin 2mm × 2mm DFN Package 6611131.
APPLICATIONS
n Sensor Power n RF Mems Relay Power n General Purpose Bias
TYPICAL APPLICATION Output Voltage Ripple General Purpose Bias with Wide Input Voltage vs Load Current Efficiency vs Load Current
V 10 100 IN 100µH 2.5V to 16V VIN = 3.6V VIN = 12V 90 2.2µF 0.1µF 8 SW CAP V V IN = 5V OUT = 16V 80 VCC VOUT 6 V LT8410 IN = 3.6V 0.1µF* CHIP V 70 REF ENABLE SHDN 4 604k EFFICIENCY (%) 60 GND FBP 0.1µF PEAK-TO-PEAK RIPPLE (mV) 2 412k V OUT 50 *HIGHER VALUE CAPACITOR IS REQUIRED WHEN THE V 8410-1 TA01a IN IS HIGHER THAN 5V 0 40 0.01 0.1 1 10 0.01 0.1 1 10 100 LOAD CURRENT (mA) 8410-1 TA02 LOAD CURRENT (mA) 8410-1 TA03 84101fc For more information www.linear.com/LT8410 1 Document Outline Description Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Features Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts