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 (140)
- 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 (267)
- Nisshinbo Micro Device Inc. (10)
- Novosense Micro (1)
- NXP (336)
- O2 Micro International Ltd (10)
- On Bright (7)
- Panasonic (2)
- PN Junction Semiconductor (2)
- Power Integrations (117)
- Powermat (1)
- Pulsiv (19)
- Qorvo (97)
- Realsil SuRealsil(tek) Microelectronics (1)
- Richtek (297)
- Sanken Electric Co., Ltd. (16)
- Sckipio (6)
- Semtech (86)
- SG-Micro (57)
- 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)
ISSI IS32LT3958 | Demoboard IS32LT3958 SEPIC EVALUATION BOARD
HIGH VOLTAGE LED LIGHTING CONTROLLER WITH INTERNAL PWM GENERATOR AND FAULT PROTECTION
Overview
| Topology | SEPIC Buck-Boost Topology |
| Input voltage | 9-16 V |
| IC revision | B |
Description
The IS32LT3958 is a current mode PWM controller designed to drive a low side external NMOS FET for wide input/output voltage range and high LED current applications. An external resistor senses the high side output current of the LED string. A high side sense is the most flexible current sensing scheme, since it functions in either boost or buck-boost mode configurations. The controller can be configured with an external resistor to operate between 100kHz~1MHz frequency resulting in small external inductor and capacitors while maintaining high efficiency. A single capacitor is all that is required to set the spread spectrum dither frequency to reduce the radiated peak emission and optimize the system EMI performance.
Features
- Wide high voltage input range: 5V to 70V
- Supports boost, buck-boost, SEPIC and buck topology
- Supports either analog, internal PWM dimming or external PWM dimming
- Stand-alone dual brightness output by internal PWM dimming
- Integrated PWM generator
- 100Hz~1kHz adjustable PWM frequency
- 5%~100% adjustable PWM duty cycle
- Excellent analog dimming capability
- Two analog dimming pins
- LED binning capability
- LED over temperature current rolloff
- Externally programmable input under voltage lockout
- ±2.8% output current accuracy over -40°C ~ +150°C temperature
- Adjustable operating frequency range of 100kHz~1MHz
- Programmable soft start to avoid inrush current
- EMI reduction capabilities
- Programmable spread spectrum function
- Operating frequency synchronization with external clock source
- Fault protection with reporting:
- VCC under voltage lockout (not reported)
- Programmable output overvoltage protection
- Output short circuit protection
- RT/SYNC pin short protection
- VDD pin short protection
- VDD under voltage lockout (not reported)
- Over temperature protection
- RoHS & Halogen-Free Compliance
- TSCA Compliance
- AEC-Q100 Qualified with Temperature Grade 1: -40°C to 125°C
Typical applications
- 9V~16V, 6A DC power supply
- LED load (7~10 LEDs in series/1A)
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Winding Style | Number of windings | L1(µH) | Z(Ω) | IR(mA) | RDC max.(Ω) | VR(V) | L1(µH) | L2(µH) | IR(A) | IR 2(A) | ISAT(A) | RDC1 typ(Ω) | RDC2 typ(Ω) | RDC1 max(Ω) | RDC2 max(Ω) | fres(MHz) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-SL5 HC SMT Common Mode Line Filter, sectional, 2 | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-SL5 HC SMT Common Mode Line Filter | Winding Stylesectional | Number of windings2 | Inductance [1]5 µH | Impedance500 Ω | Rated Current5000 mA | DC Resistance [1]0.0055 Ω | Rated Voltage80 V | – | – | – | – | – | – | – | – | – | – | – | ||||
 | WE-DD SMT Shielded Coupled Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-DD SMT Shielded Coupled Inductor | – | – | – | – | – | – | – | Inductance 110 µH | Inductance 210 µH | Rated Current2.7 A | Rated Current 22.7 A | Saturation Current7 A | DC Resistance 10.038 Ω | DC Resistance 20.038 Ω | DC Resistance 10.044 Ω | DC Resistance 20.044 Ω | Self Resonant Frequency18 MHz | TypeCrossed |