u6262b ATMEL Corporation, u6262b Datasheet
u6262b
Manufacturer Part Number
u6262b
Description
Dc/dc Converter Power Supply
Manufacturer
ATMEL Corporation
Datasheet
1.U6262B.pdf
(2 pages)
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Rev. A1, 03-Dec-97
DC/DC Converter – Power Supply 20 V
Description
The U6262B is a multifunctional power supply IC which
provides four different voltages dedicated to supply
components of complex microcontroller systems.
Supplied by a battery voltage in the wide range from 6 V
to 26 V, the U6229B generates typically 20 V with a
step-up converter, PWM, external power MOSFET and
150
Features
D
D
Ordering Information
Block Diagram
Voltage outputs
– 20-V step-up converter with I
– 7-V step-down converter with I
– 5-V logic supply with I
– 5-V reference voltage with I
Logic input ENABLE
– Enables the step-up converter
m
H inductivity. This voltage is fed to a step-down
Extended Type Number
U6262B
V
Batt
GATE
SOURCE
SGND
VKL15
v
GND
14 mA
PWM
Start-up circuit
VBL
over voltage
v
protection
Preliminary Information
v
and
14 mA
Figure 1. Block diagram with external circuit
v
converter
1.2 A
ENABLE
Step-up
400 mA
VA1
Package
Supply
20 V
SO20
Oscillator
Step-down
VHL VH
converter
OSC
Supply
7 V
converter with external 150
7-V auxiliary voltage with a small ripple. By means of
this voltage, two linear regulators with only a small power
dissipation provide a constant 5-V ( 3%) supply for
microcontrollers and an even more accurate 5-V ( 2%)
supply as a reference for sensors and a/d converters.
D
D
Analog input VKL15
– Energy-reserve mode switches off the step-up
– Controls start-up behavior
Logic output NRES
– N-reset output with over/ under voltage
converter at V
monitoring of both 5-V supplies
RSET
reference
Internal
supply
Logic
VCC
AGND
supply
Logic
5 V
Batt
< 5.25 V
VCC / VREF
Over / under
Reference
voltage
voltage
control
m
Remarks
H inductivity to generate a
NRES
U6262B
VREF
Reference
supply
5 V
13384
1 (2)
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u6262b Summary of contents
Page 1
... DC/DC Converter – Power Supply 20 V Description The U6262B is a multifunctional power supply IC which provides four different voltages dedicated to supply components of complex microcontroller systems. Supplied by a battery voltage in the wide range from the U6229B generates typically 20 V with a step-up converter, PWM, external power MOSFET and ...
Page 2
... U6262B Ozone Depleting Substances Policy Statement It is the policy of TEMIC Semiconductor GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment ...