ACTIVE
Part Number
UM1520
Description
300mA, High-PSRR, Low Quiescent Current, Low-Dropout Linear Regulator
Status
ACTIVE
Output Options
Fixed
Iout(Max) (mA)
300
Vin(Min) (V)
1.7
Vin(Max) (V)
5.5
Vout (Min) (V)
1.1
Vout (Max) (V)
3.3
Fixed output options (V)
1.1, 1.2, 1.8, 2.5, 2.7, 2.8, 3.0, 3.3
Iq (uA)
50
Vdropout (mV)
157
PSRR@1kHz (dB)
91 (f=3kHz)
Enable Control
Yes
Auto-Discharge
Yes
Operating Temperature Range (℃)
-40 to 85
Package
SOT23-5, DFN4 1.0x1.0
The UM1520 series are low-dropout linear regulators that sources 300mA of output current. The devices feature low ON resistance, high PSRR, low noise, low quiescent current, good load&line transient response and smooth softstart that meets the requirements for a variety of applications.
The UM1520 series feature an internal soft-start circuit to avoid excessive inrush current, thus minimizing the input voltage drop during start-up. An active pulldown circuit quickly discharges the output when the LDO is disabled and provides a known start-up state. The EN input allows an external logic signal to enable or disable the regulated output. The devices are designed to work with small ceramic capacitors that allows for a small overall package size.
The UM1520 series are available in SOT23-5 and DFN4 1.0×1.0 packages. The operating free-air range is from -40癈 to +85癈.
- Input voltage range: 1.7V to 5.5V
- Guaranteed output current: 300mA
- Low quiescent current: 50µA (typ)
- Low shutdown current: 0.1μA (typ)
- High PSRR: 91dB (VIN=3.3V, VOUT=2.8V, IOUT = 30mA, f = 3kHz, UM1520CDB4-280)
- Fixed output voltage range of UM1520: 1.1V, 1.2V, 1.8V, 2.5, 2.7V, 2.8V, 3.0V, 3.3V
- Extremely low inrush current
- Low Profile SOT23-5 and DFN4 1.0×1.0 Packages
- Camera modules
- Audio/Video equipment
- Portable games devices
- Set-top boxes
- Battery-powered equipment
| Part Number | Packaging Type | Marking Code | Shipping Qty |
|---|---|---|---|
| UM1520xDB4-xxx | DFN4 1.0×1.0 | xxx | 3000pcs/7Inch Tape & Reel |
| UM1520xS5-xxx | SOT23-5 | xxx | 3000pcs/7Inch Tape & Reel |
