EL7531 Monolithic 1A Step-Down Regulator with Low Quiescent Current

The EL7531 is a synchronous, integrated FET 1A step-down regulator with internal compensation. It operates with an input voltage range from 2.5V to 5.5V, which accommodates supplies of 3.3V, 5V, or a Li-Ion battery source. The output can be externally set from 0.8V to VIN with a resistive divider.

The EL7531 features automatic PFM/PWM mode control, or PWM mode only. The PWM frequency is typically 1.4MHz and can be synchronized up to 12MHz. The typical no load quiescent current is only 120uA. Additional features include a Power-Good output, <1uA shut-down current, short-circuit protection, and over-temperature protection.

The EL7531 is available in the 10-pin MSOP package, making the entire converter occupy less than 0.15 in2 of PCB area with components on one side only. The 10-pin MSOP package is specified for operation over the full -40°C to +85°C temperature range.

EL7531 特点

Less than 0.15 in2 (0.97 cm2) footprint for the complete 1A converter
Components on one side of PCB
Max height 1.1mm MSOP10
Power-Good (PG) output
Internally-compensated voltage mode controller
Up to 94% efficiency
<1ìA shut-down current
120ìA quiescent current
Overcurrent and over-temperature protection
External synchronizable up to 12MHz
Pb-Free plus anneal available (RoHS compliant)

EL7531 应用

PDA and pocket PC computers
Bar code readers
Cellular phones
Portable test equipment
Li-Ion battery powered devices
Small form factor (SFP) modules

EL7531 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
EL7531EVAL1Z	量产		评估板	N/A	价格录入中
EL7531IY	量产	工业级	10 Ld MSOP	1	1.94
EL7531IY-T13	量产	工业级	10 Ld MSOP T +R	1	2.04
EL7531IYZ	量产	工业级	10 Ld MSOP	2	1.61
EL7531IYZ-T13	量产	工业级	10 Ld MSOP T +R	2	1.71
EL7531IYZ-T7	量产	工业级	10 Ld MSOP T +R	2	1.71
EL7531EVAL1	停产		评估板	N/A	N/A
EL7531IL-EVAL	停产		评估板	N/A	N/A
EL7531IY-EVAL	停产		评估板	N/A	N/A
EL7531IY-T7	停产	工业级	10 Ld MSOP T +R	1	N/A