MAX610 MAXIM [Maxim Integrated Products], MAX610 Datasheet - Page 10

• Manufacturer Part Number: MAX610
• Description: AC-to-DC Regulator(110/220VAC to 5.0VDC)
• Manufacturer: MAXIM [Maxim Integrated Products]

AC-to-DC Regulator
(110/220VAC to 5.0VDC)
1) Unless driven by a transformer, the 5V output of the
2) Use an isolation transformer or ground fault inter-
3) When the 110/220VAC input is disconnected from a
4) C1 must be able to withstand the peak AC input
5) Observe th power dissipation limit. Excessive
10
___Cautions and Application Hints
MAX610/MAX611/MAX612 is NOT ISOLATED from
the power line, and all circuitry connected to the
MAX610/MAX611/MAX612 should be treated as if it
were directly connected to the power line. The
MAX610/MAX611/MAX612, its circuitry, and all
components driven by the 5V output present a
shock hazard and should be in a protective enclo-
sure to prevent accidental contact.
rupter (GFI) when breadboarding, testing, or trou-
ble-shooting a MAX610 family based power supply
or any circuitry powered by the MAX610 family. If
the MAX610/MAX611/MAX612 is connected directly
to the power line, do NOT connect the ground of
an oscilloscope to the circuit—this will severely
damage the oscilloscope and destroy the
MAX610/MAX611/MAX612.
MAX610 family based power supply, the input
capacitor, C1, may be left charged to the peak
input line voltage, creating a shock hazard on the
input terminals. The 1MΩ resistor shown in Figure 3
is recommended for use in any of the circuits when
the input to the power supply may be disconnected
or where the input capacitor must be discharged to
prevent shock hazards to maintenance or service
personnel.
voltage. The power source should be properly
fused.
power dissipation will cause the junction tempera-
ture to rise above the absolute maximum rating and
will degrade reliability.
______________________________________________________________________________________
6) Use the minimum value of C1 that will deliver the
7) The over/undervoltage detection circuit is set up for
8) If the value of C2, the raw DC filter capacitor, is
9) While the MAX610 family is stable without an output
10) When powering the MAX610 or MAX612 through
11) A 0.01µF (50V) capacitor connected between AC1
desired output current. Minimizing the value of C1
minimizes the dissipation of the MAX610/MAX611/
MAX612, thus increasing the reliability of the power
supply.
5V operation. Even if the V
set another output voltage, the over/undervoltage
detection is left set at 4.65V and 5.4V.
above 750µF, limit the maximum output current by
inserting a resistor between V
This prevents damage to the MAX610/MAX611/
MAX612 that might occur if the energy stored in a
large valued C2 were discharged into a short cir-
cuit. If C2 is below 750µF, this protection is not
necessary.
filter capacitor, it is good engineering practice to
have power-supply bypass capacitors on the output
to compensate for the increased output impedance
of the MAX610/MAX611/MAX612 at high frequency.
A 47µF in parallel with a 0.1µF will keep the effec-
tive output impedance low from DC to greater than
1MHz.
the V+ terminal and using only the DC linear regula-
tor, connect both AC1 and AC2 terminals to V-.
When using only the DC linear regulator portion of
the MAX611, the AC1 terminal should be connected
to V-.
and AC2 for the MAX610/MAX612 or between AC1
and GND for the MAX611 protects the bridge rectifi-
er from damage due to input transients.
SET
terminal is used to
OUT
and V
SENSE
.