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Compact Synchronous Buck Regulator

Package Information

CAD Model:View CAD Model
Pkg. Type:TDFN
Pkg. Code:LKN
Lead Count (#):8
Pkg. Dimensions (mm):2.01 x 2.01 x 0.75
Pitch (mm):0.5

Environmental & Export Classifications

Moisture Sensitivity Level (MSL)3
Pb (Lead) FreeYes
RoHS (ISL8002BIRZ-T7A)Download
ECCN (US)
HTS (US)

Product Attributes

Lead Count (#)8
Carrier TypeReel
Moisture Sensitivity Level (MSL)3
Pb (Lead) FreeYes
Pb Free CategoryPb-Free 100% Matte Tin Plate w/Anneal-e3
Temp. Range (°C)-40 to +85°C
BOM Total Footprint (mm2)64
Control TypeCurrent Mode
Duty Cycle (%)75 - 75
IQ [Rail 1] (µA)35
Input Voltage (Max) (V)5.5
Input Voltage (Max) [Rail 1] (V)5.5 - 5.5
Input Voltage (Min) (V)2.7
Input Voltage (Min) [Rail 1] (V)2.7
Length (mm)2
MOQ250
Output Current (Max) [Rail 1] (A)2
Output Voltage (Max) (V)4
Output Voltage (Max) [Rail 1] (V)4
Output Voltage (Min) (V)0.6
Output Voltage (Min) [Rail 1] (V)0.6
Outputs (#)1
PORYes
Parametric CategoryBuck Regulators (Integrated FETs)
Peak Efficiency (%)95
Pitch (mm)0.5
Pkg. Dimensions (mm)2.0 x 2.0 x 0.75
Pkg. TypeTDFN
Qualification LevelStandard
Quiescent Current35 µA
SYNCH CapabilityNo
Switching Frequency (KHz)2 - 2
Switching Frequency Range (Typical) (kHz)1700 - 2300
Thickness (mm)0.75
Topology [Rail 1]Buck
Width (mm)2

Description

The ISL8002B is a highly efficient, monolithic, synchronous step-down DC/DC converter that can deliver up to 2A of continuous output current from a 2. 7V to 5. 5V input supply. It uses peak current mode control architecture to allow very low duty cycle operation. ISL8002B operates at a 2MHz switching frequency, thereby providing superior transient response and allowing for the use of a small inductor. ISL8002B also has excellent stability. The ISL8002B integrates very low rDS(ON) MOSFETs in order to maximize efficiency. In addition, since the high-side MOSFET is a PMOS, the need for a boot capacitor is eliminated, thereby reducing external component count. The device can be configured for either PFM (discontinuous conduction) or PWM (continuous conduction) operation at light load. PFM provides high efficiency by reducing switching losses at light loads and PWM for fast transient response, which helps reduce the output noise and RF interference. The device is offered in a space saving 8 Ld 2mmx2mm TDFN Pb-free package with exposed pad for improved thermal performance. The complete converter occupies less than 64mm2 area.