High Current LDO with Low IQ and High PSRR
ISL9007
Features
ISL9007 is a high performance LDO that delivers a continuous
400mA of load current. It has a low standby current and
high PSRR and is stable with output capacitance of 1µF to
10µF with an ESR of up to 200mΩ.
• High performance LDO with 400mA continuous output
The ISL9007 has a very high PSRR of 75dB and output noise
less than 30µVRMS. When coupled with a no load quiescent
current of 50µA (typical), and 1µA (max) shutdown current, the
ISL9007 is an ideal choice for portable wireless equipment.
The ISL9007 comes in fixed voltage options of 3.3V, 2.85V,
2.8V, and 2.5V with ±1.8% output voltage accuracy
over-temperature, line and load. Other output voltage options
may be available upon request.
• Excellent transient response to large current steps
• Excellent load regulation: <0.1% voltage change across full
range of load current
• Very high PSRR: 75dB @ 1kHz
• Wide input voltage capability: 2.3V to 6.5V
• Very low quiescent current: 50µA
• Low dropout voltage: typically 200mV @ 400mA
• Low output noise: typically 30µVRMS @ 100µA (2.5V)
• Stable with 1µF to 10µF ceramic capacitors
• Shutdown pin turns off LDO for 1µA (max) standby current
• Soft-start to limit input current surge during enable
• Current limit and overheat protection
• ±1.8% accuracy over all operating conditions
• 8 Ld MSOP package
• -40°C to +85°C operating temperature range
• Pb-free (RoHS compliant)
Applications
• PDAs, Cell Phones and Smart Phones
• Portable Instruments, MP3 Players
• Handheld Devices, including Medical Handhelds
VIN
VO
VIN
UVLO
ISL9007
1
8
VIN (3.0V TO 6.5V)
VIN
7
OFF
6
SHUTDOWN
ON
VOUT
VO
CONTROL
LOGIC
VIN
SD
5
SHORT CIRCUIT,
THERMAL PROTECTION,
SOFT-START
GND
C1
C2
SD
+
-
C1, C2: 1µF X5R CERAMIC CAPACITOR
BANDGAP AND
TEMPERATURE
SENSOR
FIGURE 1. TYPICAL APPLICATION
February 11, 2014
FN9218.3
1
GND
FIGURE 2. BLOCK DIAGRAM
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
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