HMC860LP3E
v01.0811
QUAD LOW NOISE HIGH PSRR
LINEAR VOLTAGE REGULATOR
Features
Ultra Low Noise:
3nV/√Hz at 10 kHz, 7nV/√Hz at 1 kHz
High Power Supply Rejection Ratio (PSRR)
80 dB at 1 kHz, 60 dB at 1 MHz
Four Voltage Outputs:
VR1 @ 3V / 80 mA
VR2, VR3 @ 3V / 20 mA
VR4 @ 4.5V / 120 mA
Adjustable Outputs: 2.5V to 5.2V
Low Power-Down Current: <1 µA
16 Lead 3x3 mm SMT Package: 9mm²
Typical Applications
The HMC860LP3E is ideal for:
• Test Instrumentation
• Military Radios, Radar and ECM
• Basestation Infrastructure
• Ultra Low Noise Frequency Generation
• Fractional-N Synthesizer Supply
• Mixed-Signal Circuit Supply
Functional Diagram
General Description
The HMC860LP3E is a BiCMOS ultra low noise
quad-output voltage regulator. It features a low noise
band-gap reference externally decoupled for best
in-close noise performance. High Power Supply
Rejection Ratio (PSRR) in the 0.1 MHz to 10 MHz
range provides excellent rejection of preceding
switching regulator noise. The four voltage outputs are
ideal for frequency generation subsystems including
Hittite’s broad line of PLLs with Integrated VCOs.
Each output voltage can be adjusted higher or
lower than the default value by using one external
resistor. Each output can be set to 5V by grounding
the corresponding HV pin. The regulator can be
powered down by the TTL-compatible Enable input.
The HMC860LP3E is housed in a 3x3mm QFN SMT
package.
9
POWER CONDITIONING - SMT
Electrical Specifications, T
A
= +25 °C
Parameter
Default Output Voltage VR1, VR2, VR3
Default Output Voltage VR4
Output Voltage Tolerance
Input Voltage Range (Default)
Input Voltage Range
Output Voltage Range VR1 to VR4
Conditions
Vdd = 5.5V; Maximum load current
Vdd = 5.5V; Maximum load current
Vdd = 5.5V; Maximum load current
Default output voltage configuration
E.g.: VR1 = VR2 = VR3 = VR4 = 3.05V;
Vdd, min = 3.35V
Set by external resistors.
Vdd = Max(VRx)+0.3V
4.8
Max (VRx) +
0.3V
2.5
Min
3
4.4
Typ
3.05
4.5
Max
3.1
4.6
2
5.6
5.6
5.2
Units
V
V
%
V
V
V
9-1
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: apps@hittite.com
HITTITE [ HITTITE MICROWAVE CORPORATION ]
