Series: -
Output Type: Adjustable
Number of Outputs: 1
Mounting Type: Surface Mount
Operating Temperature: -40°C ~ 85°C
Synchronous Rectifier: Yes
Type: Step-Down (Buck)
PWM Type: Voltage Mode
Current - Output: 2.5A
Packaging: TubeAlternate Packaging
Package / Case: 24-VFQFN Exposed Pad
Supplier Device Package: 24-QFN (4x4)
Manufacturer: Intersil
Voltage - Output: 0.6 V ~ 14 V
Voltage - Input: 5V, 5.5 V ~ 14 V
Frequency - Switching: 500kHz ~ 1.2MHz
DescriptionThe ISL8502IRZ belongs to ISL8502, which is a synchronous buck controller with internal MOSFETs packaged in a small 4mmx4mm QFN package. The ISL8502 can support a continuous load of 2.5A and has a very wide input voltage range. With the switching MOSFETs integrated into the IC, the complete regulator footprint can be very small and provide a much more efficient solution than a linear regulator. The ISL8502 is capable of stand alone operation or it can be used in a master slave combination for multiple outputs that
are derived from the same input rail. Multiple slave channels (up to six) can be synchronized. This method minimizes the EMI and beat frequencies effect with multi-channel operation. The switching PWM controller drives two internal N-Channel MOSFETs in a synchronous-rectified buck converter topology. The synchronous buck converter uses voltage-mode control with fast transient response. The switching regulator provides a maximum static regulation tolerance of ±1% over line, load, and temperature ranges. The output is user-adjustable by means of external resistors down to 0.6V. The output is monitored for undervoltage events. The switching regulator also has overcurrent protection. Thermal shutdown is integrated. The ISL8502 features a bidirectional Enable pin that allows the part to pull the enable pin low during fault detection.
The features of ISL8502 can be summarized as (1)over 2.5A continuous output current; (2)integrated MOSFETs for small regulator footprint; (3)adjustable switching frequency, 500kHz - 1.2MHz; (4)tight output voltage regulation, ±1% over temperature; (5)wide input voltage range, 5V ±10% or 5.5V to 14V; (6)wide output voltage range, from 0.6V; (7)simple single-loop voltage-mode PWM control design; (8)input voltage feed-forward for constant modulator gain; (9)fast PWM converter transient response; (10)lossless rDS(ON) high side and low side overcurrent protection; (11)undervoltage detection; (12)integrated thermal shutdown protection; (13)power good indication; (14)adjustable soft-start; (15)Pb-Free plus anneal available (RoHS compliant).
The maximum absolute ratings of ISL8502 are (1)VIN: GND - 0.3V to +16.5V; (2)VCC: GND - 0.3V to +6.0V; (3)absolute boot voltage, VBOOT:+22.0V; (4)upper driver supply voltage, VBOOT - VPHASE: +6.0V; (5)all other pins:GND - 0.3V to VCC + 0.3V; (6)supply voltage on VIN:5.5V to 14V; (7)ambient temperature range:-40°C to +85°C; (8)junction temperature range: -40°C to +125°C; (9)maximum junction temperature (plastic package):+150°C; (10)maximum storage temperature range:-65°C to +150°C; (11)maximum lead temperature (soldering 10s): +300°C(SOIC - lead tips only).(CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.)
Parameters: | Technical/Catalog Information | ISL8502IRZ |
| Vendor | Intersil |
| Category | Integrated Circuits (ICs) |
| Type | Step-Down (Buck) |
| Number of Outputs | 1 |
| Voltage - Input | 5V, 5.5 ~ 14 V |
| Voltage - Output | 0.6 ~ 14 V |
| Current - Output | 2.5A |
| Power - Output | - |
| Package / Case | 24-QFN |
| Packaging | Tube |
| Internal Switch(s) | Yes |
| Synchronous | Yes |
| Rds (On) | 180 mOhm (High side), 90 mOhm (Low side) |
| Operating Temperature | -40°C ~ 85°C |
| Frequency - Switching | 500kHz ~ 1.2MHz |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | ISL8502IRZ
ISL8502IRZ
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ISL8502IRZ Data Sheet
