Details, datasheet, quote on part number: LTC1148HVCN
PartLTC1148HVCN
Category
DescriptionHigh Efficiency Synchronous Step-down Switching Regulators
CompanyLinear Technology Corporation
DatasheetDownload LTC1148HVCN datasheet
Quote
Find where to buy
 
  

 

Features, Applications
LTC1148 LTC1148-3.3/LTC1148-5 High Efficiency Synchronous Step-Down Switching Regulators FEATURES

Ultrahigh Efficiency: Over 95% Possible Current-Mode Operation for Excellent Line and Load Transient Response High Efficiency Maintained Over Three Decades of Output Current Low 160A Standby Current at Light Loads Logic Controlled Micropower Shutdown: < 20A Wide VIN Range: to 20V Short-Circuit Protection Very Low Dropout Operation: 100% Duty Cycle Synchronous FET Switching for High Efficiency Adaptive Nonoverlap Gate Drives Output Can Be Externally Held High in Shutdown Available in 14-Pin Narrow SO Package

The LTC1148 series is a family of synchronous stepdown switching regulator controllers featuring automatic Burst ModeTM operation to maintain high efficiencies at low output currents. These devices drive external complementary power MOSFETs at switching frequencies to 250kHz using a constant off-time current-mode architecture providing constant ripple current in the inductor. The operating current level is user-programmable via an external current sense resistor. Wide input supply range allows operation from 18V (20V maximum). Constant off-time architecture provides low dropout regulation limited by only the RDS(ON) of the external MOSFET and resistance of the inductor and current sense resistor. The LTC1148 series combines synchronous switching for maximum efficiency at high currents with an automatic low current operating mode, called Burst Mode operation, which reduces switching losses. Standby power is reduced to only 2mW at VIN = 10V (at IOUT = 0). Load currents in Burst Mode operation are typically to 300mA. For operation to 48V input, see the LTC1149 and LTC1159 data sheets and Application Note 54.

, LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a trademark of Linear Technology Corporation. * LTC1148L and LTC1148L-3.3 only.

Notebook and Palmtop Computers Portable Instruments Battery-Operated Digital Devices Cellular Telephones DC Power Distribution Systems GPS Systems

1F VIN P-DRIVE LTC1148HV-5 SHUTDOWN SENSE + ITH SENSE CT N-DRIVE SGND PGND
TOP VIEW P-DRIVE NC VIN CT INTVCC ITH SENSE N-DRIVE NC 12 PGND 11 SGND 10 SHUTDOWN 9 8 VFB* SENSE +

Input Supply Voltage (Pin 3) LTC1148 and LTC1148L Series............ 0.3V LTC1148HV Series............................... 0.3V Continuous Output Current (Pins 14).............. 50mA Sense Voltages (Pins 8) LTC1148HV (Adjustable Only) VIN 0.3V VIN < 12.7V......................... (VIN 0.3V Operating Ambient Temperature Range...... to 70C Extended Commercial and Industrial Temperature Range............................... to 85C Junction Temperature (Note 2)............................ 125C Storage Temperature Range................ to 150C Lead Temperature (Soldering, 10 sec)................. 300C

SYMBOL V9 I9 VOUT PARAMETER Feedback Voltage LTC1148L, LTC1148HV) Feedback Current LTC1148L, LTC1148HV)

Regulated Output Voltage VIN LTC1148HV-3.3, LTC1148L-3.3 ILOAD LTC1148-5, LTC1148HV-5 ILOAD = 700mA Output Voltage Line Regulation VIN to 12V, ILOAD = 50mA Output Voltage Load Regulation 5mA < ILOAD 5mA < ILOAD < 2A Output Ripple (Burst Mode) ILOAD = 0A

Input DC Supply Current (Note 3) LTC1148 Series Normal Mode Sleep Mode Sleep Mode (LTC1148-5) Shutdown LTC1148HV Series Normal Mode Sleep Mode Sleep Mode (LTC1148HV-5) Shutdown LTC1148L Series Normal Mode Sleep Mode Shutdown

SYMBOL V7 PARAMETER Current Sense Threshold Voltage I10 I4 tOFF tR, tF Shutdown Pin Threshold Shutdown Pin Input Current CT Pin Discharge Current Off Time (Note 5) Driver Output Transition Times

CONDITIONS VSENSE + 25mV (Forced) VSENSE 25mV (Forced) VSENSE = VOUT + 100mV (Forced) VSENSE = VOUT 100mV (Forced) VSENSE = VOUT + 100mV (Forced) VSENSE = VOUT 100mV (Forced) 0V < VSHUTDOWN < 8V, VIN = 16V VOUT in Regulation, VSENSE = VOUT = 390pF, ILOAD = 3000pF (Pins 1, 14), VIN 50 4 MIN TYP MAX UNITS s ns

SYMBOL V9 VOUT PARAMETER Feedback Voltage LTC1148HV LTC1148L) Regulated Output Voltage LTC1148-5, LTC1148HV-5 Input DC Supply Current (Note 3) LTC1148 Series Normal Mode Sleep Mode Sleep Mode Shutdown LTC1148HV Series Normal Mode Sleep Mode Sleep Mode Shutdown LTC1148L Series Normal Mode Sleep Mode Shutdown Current Sense Threshold Voltage LTC1148HV, LTC1148L (Note 4) CONDITIONS VIN = 9V VIN = 9V ILOAD = 700mA ILOAD = 700mA (Note 4V < VIN 4V < VIN 6V < VIN < 12V VSHUTDOWN 4V < VIN 4V < VIN 4V < VIN 6V < VIN < 18V VSHUTDOWN 4V < VIN 3.5V < VIN 3.5V < VIN < 12V VSHUTDOWN 3.5V < VIN < 12V VSENSE 25mV (Forced) VSENSE + 25mV (Forced) V s MIN 1.20 TYP 1.25 MAX 1.30 UNITS V

LTC1148HV-3.3, LTC1148L-3.3 VSENSE = VOUT + 100mV (Forced) VSENSE = VOUT 100mV (Forced) LTC1148HV-5 V10 tOFF Shutdown Pin Threshold Off Time (Note = 390pF, ILOAD = 700mA VSENSE = VOUT + 100mV (Forced) VSENSE = VOUT 100mV (Forced)


 

Related products with the same datasheet
LTC1148-3.3
LTC1148-5
LTC1148CN
LTC1148CN-3.3
LTC1148CN-5
LTC1148CS
LTC1148CS-3.3
LTC1148CS-5
LTC1148HV
LTC1148HV-3.3
LTC1148HV-5
Some Part number from the same manufacture Linear Technology Corporation
LTC1148HVCN-3.3 High Efficiency Synchronous Step-down Switching Regulators
LTC1149 LTC1149, 48V Synchronous Step-down
LTC1150 LTC1150, 15V Zero-drift Operational Amplifier With Internal Capacitors
LTC1151 LTC1151, Dual 15V Zero-drift Operational Amplifier
LTC1151CSW Dual 15V Zero-drift Operational Amplifier
LTC1152 LTC1152, Rail-to-rail Input Rail-to-rail Output Zero-drift op Amp
LTC1152C Rail-to-rail Input Rail-to-rail Output Zero-drift op Amp
LTC1152CN8 LTC1152, Rail-to-rail Input Rail-to-rail Output Zero-drift op Amp
LTC1152I Rail-to-rail Input Rail-to-rail Output Zero-drift op Amp
LTC1152IN8 LTC1152, Rail-to-rail Input Rail-to-rail Output Zero-drift op Amp
LTC1153 LTC1153, Auto-reset Electronic Circuit Breaker
LTC1153IN8 Auto-reset Electronic Circuit Breaker
LTC1154 LTC1154, High-side Micropower MOSFET Driver
LTC1155 LTC1155, Dual High Side Micropower N-Ch. MOSFET Driver With Internal Charge Pump
LTC1155C Dual High Side Micropower MOSFET Driver
LTC1155CJ8 LTC1155, Dual High Side Micropower N-Ch. MOSFET Driver With Internal Charge Pump
LTC1155I Dual High Side Micropower MOSFET Driver
LTC1155IN8 LTC1155, Dual High Side Micropower N-Ch. MOSFET Driver With Internal Charge Pump
LTC1156 LTC1156, Quad High Side Micropower N-Ch. MOSFET Driver With Internal Charge Pump
LTC1156C Quad High Side Micropower MOSFET Driver With Internal Charge Pump
LTC1156CN LTC1156, Quad High Side Micropower N-Ch. MOSFET Driver With Internal Charge Pump

LH0070-0H : Precision 10 Volt Reference

LT1490AIS8 : LT1490A, Dual Micropower Rail-to-rail Input And Output op Amp

LTC1298IN8 : ->Multiplexed LTC1298 5V, 2-Ch Micropower, , Serial Interface, SO-8

LTC1401I : Complete So-8, 12-bit, 200ksps ADC With Shutdown

LTC1454IN : Voltage Output LTC1454, Dual 5V, 0.5LSB Inl, Micropower, Serial, SO-16, Internal Ref.

LTC2640AHTS8-LM12-PBF : Single 12-Bit SPI VOUT DACs With Bidirectional Reference The LTC2640 is a family of 12-, 10-, and 8-bit voltage-output DACs with an integrated, high-accuracy, low-drift reference in an 8-lead TSOT-23 package. It has a rail-to-rail output buffer that is guaranteed monotonic. The LTC2640-L has a

LTC2222CUK-11#TRPBF : 11-Bit, 105Msps ADC The LTC2222-11 is a 105Msps, sampling 11-bit A/D converter designed for digitizing high frequency, wide dynamic range signals. The LTC2222-11 is perfect for demanding communications applications with AC performance that includes 65.4dB SNR and 80dB spurious free dynamic range f

LS122 : 10 mA, 45 V, 2 CHANNEL, NPN, Si, SMALL SIGNAL TRANSISTOR Specifications: Polarity: NPN ; Package Type: PLASTIC, DIP-8

LT3021ES8-1.5#TRPBF : 0.2 V-9.5 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.285 V DROPOUT, PDSO8 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Adjustable / Variable ; Package Type: Other, 0.150 INCH, PLASTIC, SOP-8 ; Life Cycle Stage: ACTIVE ; Output Voltage: 0.2000 to 9.5 volts ; IOUT: 0.5000 amps ; Dropout Voltage: 0.2850 volts

LTC1068IG#TRPBF : QUAD SWITCHED CAPACITOR FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, PDSO28 Specifications: Filter Category: Active Filter ; Filter Type: Universal ; Filter Class: Switched Capacitor ; Supply Voltage (VS): 5 to 5.5 volts ; Fc: 5.00E-4 to 25 kHz ; Package Type: SSOP, 0.209 INCH, PLASTIC, SSOP-28 ; Number of Pins: 28 ; Number of Devices: 4 ; Applications: General ; Standards

LTC6256CKC#TRMPBF : IC,OP-AMP,DUAL,BICMOS,LLCC,8PIN,PLASTIC Specifications: Device Type: Operational Amplifiers ; Standards and Certifications: RoHS

RH1021DMH-10 : 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 10 V, MBCY8 Specifications: Package Type: Other, METAL CAN, TO-5, 8 PIN ; VREF: 9.98 to 10.02 volts ; TC: 25 ppm/C ; Operating Temperature: -55 to 125 C (-67 to 257 F)

 
0-C     D-L     M-R     S-Z