Skip to main content
Renesas Electronics Corporation
500mA 4.3MHz Low IQ High-Efficiency Synchronous Buck Converter

Package Information

CAD Model:View CAD Model
Pkg. Type:uTDFN
Pkg. Code:LNV
Lead Count (#):6
Pkg. Dimensions (mm):1.6 x 1.6 x 0.00
Pitch (mm):0.5

Environmental & Export Classifications

Moisture Sensitivity Level (MSL)1
Pb (Lead) FreeYes
RoHS (ISL9104IRUCZ-T)Download
ECCN (US)
HTS (US)

Product Attributes

Lead Count (#)6
Carrier TypeReel
Moisture Sensitivity Level (MSL)1
Pb (Lead) FreeYes
Pb Free CategoryNickel/Palladium/Gold-e4
Temp. Range (°C)-40 to +85°C
BOM Total Footprint (mm2)322.6
Control TypeCurrent Mode
Duty Cycle (%)100 - 100
IQ [Rail 1] (µA)20
Input Voltage (Max) (V)6
Input Voltage (Max) [Rail 1]6
Input Voltage (Min) (V)2.7
Input Voltage (Min) [Rail 1] (V)2.7
Length (mm)1.6
MOQ3000
Output Current (Max) [Rail 1] (A)0.5
Output Voltage (Max) (V)6
Output Voltage (Max) [Rail 1] (V)6
Output Voltage (Min) (V)0.8
Output Voltage (Min) [Rail 1] (V)0.8
Outputs (#)1
PORNo
Parametric CategoryBuck Regulators (Integrated FETs)
Peak Efficiency (%)93
Pitch (mm)0.5
Pkg. Dimensions (mm)1.6 x 1.6 x 0.00
Pkg. TypeuTDFN
Qualification LevelStandard
Quiescent Current20 µA
SYNCH CapabilityNo
Simulation Model AvailableN/A
Switching Frequency (KHz)4.3 - 4.3
Switching Frequency Range (Typical) (kHz)4300 - 4300
Topology [Rail 1]Buck
Width (mm)1.6

Description

The ISL9104/ISL9104A is a 500mA, 4.3MHz step-down regulator, which is ideal for powering low-voltage microprocessors in compact devices such as PDAs and cellular phones. It is optimized for generating low output voltages down to 0.8V. The supply voltage range is from 2.7V to 6V allowing the use of a single Li+ cell, three NiMH cells, or a regulated 5V input. It has a guaranteed minimum output current of 500mA. A high switching frequency of 4.3MHz pulse-width modulation (PWM) allows using small external components. Under light-load conditions, the device operates at low IQ skip mode with a typical 20µA quiescent current for the highest light-load efficiency to maximize battery life, and it automatically switches to fixed-frequency PWM mode under heavy-load conditions. The ISL9104 and ISL9104A include a pair of low ON-resistance P-Channel and N-Channel internal MOSFETs to maximize system efficiency and minimize the external component count. 100% duty-cycle operation allows less than 300mV dropout voltage at 500mA. The ISL9104/ISL9104A offers internal digital soft-start, enable for power sequencing, overcurrent protection, and thermal shutdown functions. In addition, the ISL9104/ISL9104A offers a quick-bleeding function that discharges the output capacitor when the IC is disabled. The ISL9104 and ISL9104A are offered in a 1.6 x 1.6mm µTDFN package. The complete converter occupies less than 0.5cm2.