IC manufacturers ISSI
IC manufacturers (103)
- All manufacturers
Analog Devices
Infineon Technologies
Microchip
Onsemi
Renesas
ROHM
STMicroelectronics
Texas Instruments
- 3peak incorporated (28)
- Ablic (23)
- Acco Semiconductor (1)
- Advanced Power (4)
- Allegro Microsystems (100)
- Alpha & Omega Semiconductor (37)
- AnalogySemi (3)
- AnDAPT Inc (204)
- Anpec (13)
- AXElite (2)
- Backward (6)
- Bright Power Semiconductor (1)
- Broadcom (46)
- Cambridge GaN Devices (18)
- Chipanalog Micro (10)
- Cologne Chips (1)
- Convenient Power (1)
- Dialog Semiconductor (12)
- Diodes Incorporated (259)
- Divimath (8)
- Elmos AG (1)
- EPC (137)
- e-Peas Semiconductors (1)
- Eta Solutions Co. Ltd. (9)
- GaN Systems (8)
- GaNPower (3)
- Giantec (1)
- Gstek Wuxi (1)
- Helix Semiconductor (7)
- IKON (1)
- Indie Semiconductor (8)
- Innovision Semiconductor Inc (2)
- Intel (68)
- Inventchip Technology (3)
- ISSI (51)
- JoulWatt (20)
- KDPOF (3)
- Kinetic Technology (8)
- Lattice semiconductor Corporation (38)
- Littelfuse (1)
- Lumissil Microsystems (8)
- M3 Technology (M3Tek) (7)
- Macnica (22)
- Marvell Semiconductor (1)
- MaxLinear (181)
- Menlo Micro (1)
- MikroE (25)
- MindCet (2)
- Monolithic Power Systems (980)
- Navitas Semiconductor Inc (6)
- NewEdge Technologies, Inc. (1)
- Nexperia (266)
- Nisshinbo Micro Device Inc. (10)
- Novosense Micro (1)
- NXP (335)
- O2 Micro International Ltd (10)
- On Bright (7)
- Panasonic (2)
- PN Junction Semiconductor (2)
- Power Integrations (117)
- Powermat (1)
- Pulsiv (19)
- Qorvo (96)
- Realsil SuRealsil(tek) Microelectronics (1)
- Richtek (297)
- Sanken Electric Co., Ltd. (16)
- Sckipio (6)
- Semtech (86)
- SG-Micro (54)
- SiFive (2)
- Silanna Semiconductor (9)
- Silergy Corporation (33)
- Silicon Laboratory Inc. (108)
- Silicontent Technology (59)
- Silvertel (59)
- Skycore Semiconductors (1)
- Skyworks (33)
- Southchip (14)
- Summit Wireless (1)
- Tagore Tech (7)
- Taiwan Semiconductor (1)
- TDK Corporation (1)
- Tempo Semiconductor (1)
- Torex (37)
- Toshiba (25)
- Transphorm (21)
- TransSIP (2)
- Union (21)
- uPI Semiconductor (2)
- Valens Semiconductor (31)
- Wise Integration (3)
- Wolfspeed (23)
- Xilinx (22)
- XL Semiconductor (3)
- XYSemi (62)
Overview
| Topology | Buck Converter |
| Input voltage | 4.5-38 V |
| Output 1 | 3 A |
| IC revision | B |
Description
The IS31LT3954_IS32LT3954 is a DC-to-DC switchingconverter, which integrate an N-channel MOSFET to operate in a buck configuration. The device supply a wide input voltage between 4.5V and 38V and provides a constant current of up to 3A for driving a single LED or multiple series connected LEDs.The external resistor, RSET, is used to adjust LED output current, which allowing the output voltage to be automatically adjusted for a variety of LED configurations.
Features
- Wide input voltage supply from 4.5V to 38V
- Withstand 40V load dump
- ±5% true average output current control
- 3A maximum output over operating temperature range
- Cycle-by-cycle current limit
- Integrated high-side MOSFET switch
- Dimming via direct logic input or power supply voltage
- Internal control loop compensation
- Under-voltage lockout (UVLO) and thermal shutdown protection
- 2μA low power shutdown
- Spread spectrum to optimize EMI
- Robust fault protection and reporting function:
- Pin-to-GND short
- Component open/short faults
- Adjacent pin-to-pin short
- LED open/short
- AEC-Q100 qualification
- IS32LT3954 only
Typical applications
- General high brightness LED lighting, Architecture lighting, Dimmable lights, Pool lighting
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT(A) | RDC max.(mΩ) | fres(MHz) | Size | Version | ISAT,10%(A) | ISAT,30%(A) | IR,40K(A) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PD SMT Power Inductor, 10 µH, 7.7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance10 µH | Performance Rated Current7.7 A | Saturation Current5.5 A | DC Resistance24 mΩ | Self Resonant Frequency21.5 MHz | Size1260 | VersionStandard | Saturation Current @ 10%5.5 A | Saturation Current @ 30%7.2 A | Rated Current5 A | ||||
| WE-PD SMT Power Inductor, 10 µH, 9.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance10 µH | Performance Rated Current9.5 A | – | DC Resistance21 mΩ | Self Resonant Frequency21 MHz | Size1210 | VersionStandard | Saturation Current @ 10%10.5 A | Saturation Current @ 30%13 A | Rated Current7.1 A | ||||
| WE-PD SMT Power Inductor, 15 µH, 7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance15 µH | Performance Rated Current7 A | Saturation Current4.5 A | DC Resistance28 mΩ | Self Resonant Frequency16.6 MHz | Size1260 | VersionStandard | Saturation Current @ 10%4.5 A | Saturation Current @ 30%5.8 A | Rated Current4.2 A | ||||
| WE-PD SMT Power Inductor, 15 µH, 7.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance15 µH | Performance Rated Current7.4 A | – | DC Resistance26 mΩ | Self Resonant Frequency17 MHz | Size1210 | VersionStandard | Saturation Current @ 10%8 A | Saturation Current @ 30%9.8 A | Rated Current6.5 A | ||||
| WE-PD SMT Power Inductor, 22 µH, 6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance22 µH | Performance Rated Current6 A | Saturation Current3.7 A | DC Resistance36 mΩ | Self Resonant Frequency13.5 MHz | Size1260 | VersionStandard | Saturation Current @ 10%3.7 A | Saturation Current @ 30%4.8 A | Rated Current3.5 A | ||||
| WE-PD SMT Power Inductor, 22 µH, 7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance22 µH | Performance Rated Current7 A | – | DC Resistance28 mΩ | Self Resonant Frequency10 MHz | Size1210 | VersionStandard | Saturation Current @ 10%6.5 A | Saturation Current @ 30%8 A | Rated Current5.3 A | ||||
| WE-PD SMT Power Inductor, 33 µH, 4.6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance33 µH | Performance Rated Current4.6 A | Saturation Current3 A | DC Resistance57 mΩ | Self Resonant Frequency11 MHz | Size1260 | VersionStandard | Saturation Current @ 10%3 A | Saturation Current @ 30%3.9 A | Rated Current2.8 A | ||||
| WE-PD SMT Power Inductor, 33 µH, 5.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance33 µH | Performance Rated Current5.5 A | – | DC Resistance45 mΩ | Self Resonant Frequency8.5 MHz | Size1210 | VersionStandard | Saturation Current @ 10%5.5 A | Saturation Current @ 30%6.8 A | Rated Current4.2 A | ||||
| WE-PD SMT Power Inductor, 47 µH, 4.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance47 µH | Performance Rated Current4.9 A | – | DC Resistance60 mΩ | Self Resonant Frequency6.5 MHz | Size1210 | VersionStandard | Saturation Current @ 10%4.5 A | Saturation Current @ 30%5.5 A | Rated Current3.8 A | ||||
| WE-PD SMT Power Inductor, 47 µH, 4.1 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance47 µH | Performance Rated Current4.1 A | Saturation Current2.6 A | DC Resistance77 mΩ | Self Resonant Frequency9.2 MHz | Size1260 | VersionStandard | Saturation Current @ 10%2.6 A | Saturation Current @ 30%3.4 A | Rated Current2.4 A |