LinearVoltageRegulators Motorola Semiconductor Products, LinearVoltageRegulators Datasheet - Page 37

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

Battery Charger ICs
Power Supply
Battery Charger
Regulation Control Circuit
MC33341P, D
T A = –25 to +85 C, Case 626, 751
is specifically designed to close the voltage and current
feedback loops in power supply and battery charger
applications. This device features the unique ability to perform
source high–side, load high–side, source low–side, and load
low–side current sensing, each with either an internally fixed
or externally adjustable threshold. The various current
sensing modes are accomplished by a means of selectively
using the internal differential amplifier, inverting amplifier, or a
direct input path. Positive voltage sensing is performed by an
internal voltage amplifier. The voltage amplifier threshold is
internally fixed and can be externally adjusted in all low–side
current sensing applications. An active high drive output is
provided to directly interface with economical optoisolators for
isolated output power systems. This device is available in
8–lead dual–in–line and surface mount packages.
MOTOROLA
66
The MC33341 is a monolithic regulation control circuit that
Current Sense
Drive Output
(continued)
Input A
1.2 V
8
1
R
R
R
Differential Amp
Differential Amp
Inverting Amp
Disable Logic
R
R
R
Threshold Adjust
Current
V CC
V CC
V CC
0.4 V
7
2
V CC
V CC
1.2 V
V sen
V th
I sen
I th
Voltage Threshold Adjust
0.2 V
Current Sense Input B/
V CC
Compensation
Fixed or Adjustable Current Threshold in all Current
Positive Voltage Sensing in all Current Sensing Modes
Fixed Voltage Threshold in all Current Sensing Modes
Adjustable Voltage Threshold in all Low–Side Current
Output Driver Directly Interfaces with Economical
Operating Voltage Range of 2.3 V to 16 V
Differential Amplifier for High–Side Source and Load
Inverting Amplifier for Source Return Low–Side Current
Noninverting Input Path for Load Low–Side Current
Current Sensing
Sensing
Sensing
Sensing Modes
Sensing Modes
Optoisolators
ANALOG AND INTERFACE INTEGRATED CIRCUITS
V
I
V CC
Transconductance
6
V CC
3
0.2 V
SELECTOR GUIDE & CROSS REFERENCE
Amp
Reference
0.4 V
V CC
V CC
Voltage Sense
1.2 V
Input
Gnd
5
4