ISL9014A Datasheet, PDF (1/11 Pages) Intersil Corporation – Dual LDO with Low Noise, Low IQ, and High PSRR

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Data Sheet
March 11, 2008
ISL9014A
FN6438.1
Dual LDO with Low Noise, Low I_Q, and
High PSRR
ISL9014A is a high performance dual LDO capable of
sourcing 300mA current from both outputs. The device has a
low standby current and high-PSRR and is stable with output
capacitance of 1µF to 10µF with ESR of up to 200mΩ.
A reference bypass pin allows an external capacitor for
adjusting a noise filter for low noise and high PSRR
applications.
The quiescent current is typically only 45µA with both LDOs
enabled and active. Separate enable pins control each
individual LDO output. When both enable pins are low, the
device is in shutdown, typically drawing less than 0.1µA.
Several combinations of voltage outputs are standard.
Output voltage options for each LDO range from 1.5V to
3.3V. Other output voltage options are available on request.
Pinout
ISL9014A
(10 LD 3x3 DFN)
TOP VIEW
VIN 1
EN1 2
EN2 ³
CBYP 4
NC 5
10 VO1
9 VO2
8 NC
7 NC
6 GND
Features
• Integrates two high performance LDOs
- VO1 - 300mA output
- VO2 - 300mA output
• Excellent transient response to large current steps
• Excellent load regulation: <1% voltage change across full
range of load current
• High PSRR: 70dB @ 1kHz
• Wide input voltage capability: 2.3V to 6.5V
• Extremely low quiescent current: 45µA (both LDOs active)
• Low dropout voltage: typically 200mV @ 300mA
• Low output noise: typically 30µV_RMS @ 100µA (1.5V)
• Stable with 1µF to 10µF ceramic capacitors
• Separate enable pins for each LDO
• Soft-start to limit input current surge during enable
• Current limit and overheat protection
• ±1.8% accuracy over all operating conditions
• Tiny 10 Ld 3mmx3mm DFN package
• -40°C to +85°C operating temperature range
• Pin compatible with Micrel MIC2211
• Pb-free (RoHS compliant)
Applications
• PDAs, Cell Phones and Smart Phones
• Portable Instruments, MP3 Players
• Handheld Devices including Medical Handhelds
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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