LinearVoltageRegulators Motorola Semiconductor Products, LinearVoltageRegulators Datasheet - Page 9

• Manufacturer Part Number: LinearVoltageRegulators
• Description: Analog And Interface Integratedcircuits Selector Guide & Cross Reference
• Manufacturer: Motorola Semiconductor Products

Voltage Regulator/Supervisory
Very Low Dropout Regulator
L4949N, D
T J = –40 to +125 C, Case 626, 751
5.0 V voltage regulator with a very low
dropout and additional functions such as
power–on reset and input voltage sense.
micro–computer
especially in automotive applications.
Power Management Controller
MC33128D
T A = –30 to +60 C, Case 751B
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
independant powering of analog and digital
circuitry, and a negative charge pump
voltage regulator for full depletion of gallium
arsenide MESFETs.
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.
MOTOROLA
38
Operating DC Supply Voltage Range
Transient Supply Voltage Up to 40 V
Extremely Low Quiescent Current in
High Precision Standby Output Voltage
Output Current Capability Up to
Very Low Dropout Voltage Less Than
Reset Circuit Sensing The Output
Programmable Reset Pulse Delay With
Voltage Sense Comparator
Thermal Shutdown and Short Circuit
5.0 V to 28 V
Standby Mode
5.0 V 1%
100 mA
0.4 V
Voltage
External Capacitor
Protections
The L4949 is a monolithic integrated
It is designed for supplying the
The MC33128 is a power management
Also included are protective system
dropout
voltage
controlled
regulators
systems
for
(continued)
“On”/“Off”
Toggle
Voltage (V CC )
Supply
Sense
Input
(S i )
1
2
V s
10
11
9
Regulator
Preregulator
1.23 V ref
6.0 V
ANALOG AND INTERFACE INTEGRATED CIRCUITS
Gnd
Low Battery
+
Protection
Shutdown
Reference
Thermal
Control
V CC
16
Logic
6
V Z
SELECTOR GUIDE & CROSS REFERENCE
3
12
Voltage (V out )
5
Output
Reset
Gnd
Reference Output
8
2.0 A
3
V BB CPC
Sense
MPU Power
Regulator 1
Regulator 2
Regulator
Regulator
Up Reset
2
Negative
C T
Standby
Standby
Standby
Charge
Pump
MPU
4
+
–
+
–
4
1.23 V
2.0 V
15
14
13
8
7
5
1
V BB Output
Output 4
CPC
Output 4
–2.5 V/1.0 mA
Output 1
3.0 V/30 mA
Output 2
3.0 V/60 mA
Output 3
3.0 V/20 mA
R
Reset
Sense
Output
(S o )
O
O
7
I
I
6
V SS
V DD
MPU