These devices are designed for supplying power and control signals from advanced satellite set-top box (STB) modules to the low noise blocks (LNBs) of single antenna ports. Each device consists of a current-mode boost converter and a low-noise linear regulator along with the circuitry required for tone injection and pin controllable interface. The device makes the total LNB supply design simple, efficient and compact with low external component count.brbr The current-mode boost converters provide the linear regulator with input voltage that is set to the voltage at the VOUT pin plus a minimal drop to insure minimum power dissipation across the internal LDO. This maintains constant voltage drop across the linear pass element while permitting adequate voltage range for tone injection.brbr The final regulated output voltage is available at the cathode of the back diode to support the operation of an antenna port for a single tuner. The outputs can be set to various voltage level for the desired polarization reception by means of the logic presented to the VSET0 and VSET1 pins. An EN pin is to be driven high to enable the outputs for the PWM and linear combination; setting EN low disables the output, forcing a shutdown mode.brbr The external modulation input (EXTM) can accept a tone modulated DiSEqC command and transfer it symmetrically to the output to meet DiSEqC 1.x protocol. An external DiSEqC tank circuit can also be implemented to support DiSEqC 2.x.
IC REG CONV SATELLIT 1OUT 16QFN Product overview: ISL9491ERZ-T from Renesas Electronics Corporation is a Power Management IC for power sequencing, voltage regulation, battery management, load control, and compact electronic system design. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include key electrical ratings, package details, and application requirements. Search-friendly keywords include PMIC, power management, load switch, power sequencing, Power Management IC, Special Purpose Regulators. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 750-ISL9491ERZ-T can be used for catalog matching and distributor lookup.
Manufacturer: Intersil
Win Source Part Number: 205604-ISL9491ERZ-T
Packaging: Reel - TR
Applications: Converter, Satellite Set-Top Box Designs
Mounting: SMD (SMT)
Voltage - Input: 8 V to 14 V
Number of Outputs: 1
Family Name: ISL9491
Output Voltage: 13.3 V to 20 V
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -20°C to 85°C
Case / Package: 16-QFN (4x4)
Alternative Parts (Cross-Reference): L5956; L9915B; L9918BDTR; L9918;
Introduction Date: February 14, 2002
ECCN: EAR99
Country of Origin: Taiwan
Estimated EOL Date: 2028
Halogen Free: Compliant
Is this a common-used part?: Yes
Popularity: High
Fake Threat In the Open Market: 49 pct.
Supply and Demand Status: Balance
Linear Voltage Regulators SING OUTPUT LNB SUPP VAGEG FOR SATELLITE
IC REG CONV SATELLIT 1OUT 16QFN
| Renesas Electronics Corporation | ERSAELECTRONICS PTE. LTD. | Win Source Electronics | VAST STOCK CO., LIMITED | Lingto Electronic Limited | |
|---|---|---|---|---|---|
| Product Category | IC Linear Voltage Regulators | IC Voltage Regulators | IC Voltage Regulators | IC Linear Voltage Regulators | IC Voltage Regulators |
| Product Number | ISL9491ERZ-T | 750-ISL9491ERZ-T | 205604-ISL9491ERZ-T | ISL9491ERZ-T | ISL9491ERZ-T |
| Product Name | Single Output LNB Supply Voltage Regulator for Satellite Set-Top Box Applications | Power Management IC | PMIC - PMIC - Voltage Regulators - Special Purpose - ISL9491ERZ-T | Linear Voltage Regulators | PMIC - Voltage Regulators - Special Purpose |
| Package Type | PPAK; Other; QFN | Other; Tape & Reel (TR) | Other; 16-QFN (4x4) | Other; 16-VQFN Exposed Pad | |
| Output Voltage | 13.3 to 20 volts | 13.3 to 20 volts | |||
| VIN | 8 to 14 volts |
