MC33128 Datasheet, PDF (1/8 Pages) Motorola, Inc – POWER MANAGEMENT CONTROLLER

Power Management Controller
The MC33128 is a power management controller specifically designed for
use in battery powered cellular telephone and pager applications. This
device contains all of the active functions required to interface the user to the
system electronics via a microprocessor. This integrated circuit consists of a
low dropout voltage regulator with power–up reset for MPU power, two low
dropout voltage regulators for independant powering of analog and digital
circuitry, and a negative charge pump voltage regulator for full depletion of
gallium arsenide MESFETs.
Also included are protective system shutdown features consisting of a
battery latch that is activated upon battery insertion, low battery voltage
shutdown, and a thermal over temperature detector. This device is available
in a 16–pin narrow body surface mount plastic package.
• Three Positive Regulated Outputs Featuring Low Dropout Voltage
• Negative Regulated Output for Full Depletion of GaAs MESFETs
• MPU Power Up Reset
• Battery Latch
• Low Battery Shutdown
• Pinned–Out Reference for MPU A/D Converter
• Low Start–Up and Operating Current
• Thermal Protection
Order this document by MC33128/D
MC33128
POWER MANAGEMENT
CONTROLLER
SEMICONDUCTOR
TECHNICAL DATA
16
1
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
ON/OFF
Toggle
Simplified Block Diagram
VCC
VBB CPC
16
+
11
10
Control
9
Logic
Low Battery
Shutdown
Thermal
Protection
Reference
32
4
Charge
Pump
Negative
Standby
Regulator
Standby
Regulator 1
Standby
Regulator 2
MPU
Regulator
MPU Power
Up Reset
Gnd 6 12 Reference Output
MOTOROLA ANALOG IC DEVICE DATA
PIN CONNECTIONS
VBB Output
8
Output 4
CPC
7
5
Output 4
–2.5 V/1.0 mA
15
Output 1
3.0 V/30 mA
1
Output 2
3.0 V/60 mA
Output 3
14 3.0 V/20 mA
13
R VDD
Output 2 ¹
VBB Charge Pump
Capacitor Input
2
VBB Charge Pump
Capacitor Drive
3
VBB Output 4
Output 4 5
Gnd 6
Output 4 Charge Pump
Capacitor Input
7
Output 4 Charge Pump ₈
Capacitor Drive
16 VCC
15 Output 1
14 Output 3
13 _{Reset Output}
12 Reference Output
11 Power Up Input
10 _{Power Down Input}
9 Battery Saver Input
(Top View)
I MPU
O
O
I _VSS
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC33128D TA = – 30° to +60°C
SO–16
© Motorola, Inc. 1996
Rev 0
1