MC33283 Datasheet, PDF (1/21 Pages) ON Semiconductor – Versatile 6 Regulator Power Management Circuit

MC33283
Versatile 6 Regulator Power
Management Circuit for
Cellular Subscriber
Terminal
The MC33283 is a complete power management solution for portable
devices such as telephone handsets, two−way radios, etc. Thanks to its
large scale integration, the device offers up to seven Low DropOut
regulators (LDO), two of them delivering a voltage higher than the
battery’s.
Despite the presence of an internal charge pump, the overall noise
specification makes the circuit an ideal candidate where noise is an
important feature. Outputs deliver 40mVRMS typical (10−100kHz) at
nominal output current.
With a 50dB ripple rejection under 10kHz, the circuit naturally shields
the downstream electronics against DC choppy lines. This parameter
guarantees a clean operation for battery operated devices.
Finally, housed in a compact Thin Quad Flat Pack TQFP−32 package,
the MC33283 gathers all the features necessary to power future portable
radios.
Features:
• 6 regulated outputs:
2.85V, four outputs: 10−135mA
4.75V @ 15mA
5.0V @ 20mA
• Low−noise: 40μVRMS at nominal output levels (10Hz−100kHz)
• Ultra−low reverse current in OFF mode (200nA typical)
• Two−mode regulator: output 5 switches from 3 to 5V with SEL pin
activated
• Thermal shutdown for a rugged and reliable operation
• All outputs are short−circuit proof
Applications:
• All Portable radios (GSM etc.)
• Bursting systems (TDMA etc.)
• Battery operated devices
http://onsemi.com
POWER MANAGEMENT
CIRCUIT FOR
PORTABLE DEVICES
SILICON MONOLITHIC
INTEGRATED CIRCUIT
32 1
FTB SUFFIX
PLASTIC PACKAGE
CASE 873B−02
(TQFP−32)
PIN CONNECTIONS
32 31 30 29 28 27 26 25
GND 1
OUT7 2
OUT2 3
OUT3 4
VCC1 5
OUT5 6
GND_CP 7
GND 8
24 GND
MC33283
23 POR
22 UVLO2
21 EN3
20 EN5
19 EN6
18 SEL
17 GND
9 10 11 12 13 14 15 16
(Top View)
ORDERING INFORMATION
Device
Temperature
Range
Package
MC33283FTB28,R2 −20°C to +70°C TQFP32
© Semiconductor Components Industries, LLC, 2006
1
July, 2006 − Rev. 2
Publication Order Number:
MC33283/D