ISL9021A

250mA Single LDO with Low I<sub>Q</sub>, Low Noise and High PSRR LDO

Product Status: Mass Production

OVERVIEW

The ISL9021A is a single LDO, which provides high performance, low input voltage and high PSRR. It delivers guaranteed continuous 250mA load current and is stable with 1µF to 4.7µF of output capacitance (±30%) with an ESR range of 5mΩ to 400mΩ.

The input voltage range for the ISL9021A is between 1.5V to 5.5V and the output voltage comes in many fixed voltage options with ±1.8% accuracy over-temperature, line and load ranges. The ISL9021A has typical PSRR of 75dB @ 10kHz and 50dB @ 1MHz.

The reverse current protection feature prevents current from flowing back to the power source when the output voltage is pulled higher than the input.

The ISL9021A is offered in tiny 4-bump 0.975mmx1.155mm WLCSP and 1.6mmx1.6mm 6 Ld µTDFN packages.

KEY FEATURES

  • High Performance LDO with 250mA Guaranteed Continuous Output Current
  • Input Voltage Range: 1.5V to 5.5V
  • Output Voltage Range: 1.2V to 3.3V
  • High PSRR: 75dB @ 10kHz, 50dB @ 1MHz
  • Low Quiescent Current: 35µA
  • Dropout Voltage: <150mV @ 250mA
  • Stable with 1µF to 4.7µF Output Capacitance (±30%) with an ESR range of 5mΩ to 400mΩ
  • ±1.8% Output Accuracy Over-Temperature/Load/Line
  • Soft-start Limits Input Current Surge During Enable
  • Current Limit and Overheat Protection
  • -40°C to +85°C Operating Temperature Range
  • Available in 0.975mmx1.155mm 4-bump WLCSP Package and 1.6mmx1.6mm 6 Ld µTDFN
  • Pb-free (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL9021A
Basic Information
生产状态
Mass Production
输入电压最小值 (V)
1.5
输入电压最大值 (V)
5.5
外部偏置
No
输出电压最小值 (V)
0.9
输出电压最大值 (V)
3.3
固定输出电压选项
Yes
O/P电压精度 (%)
±1.8
输出电流1最大值 (A)
0.25
PSRR (dB)
60
资质级别
Standard
噪声 (μVRMS 10Hz至100kHz)
13
IQ
35 µA
压降典型值 (mV)
150 @ 250mA
启用/关闭
Yes
POR数量
N/A
PGOOD输出
No
输入电压范围 (V)
1.5 to 5.5
输出电压范围 (V)
0.9 to 3.3
CAN 采样
YES
温度范围
-40 to +85

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