RE46C117E8F Ver la hoja de datos (PDF) - Microchip Technology
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RE46C117E8F Datasheet PDF : 6 Pages
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RE46C117
DC to DC Converter and Piezoelectric Horn Driver
Product Specification
R&E International
A Subsidiary of Microchip Technology Inc.
Electrical Characteristics
Limits apply at Vdd=3V, Vss=0V, Cvo=10uF, TA=0°C to 50°C, unless otherwise noted.
Typical values are at TA=27°C.
Parameter
Supply Voltage
Standby Supply
Current
Quiescent Supply
Current
Quiescent Ivo
Input Leakage
Input Voltage Low
Input Voltage High
Symbol
Vdd
Iddstby
Iddq
Ivoq
Iin
Iihf
Iilf
Vil
Vih
Output Low Voltage
Output High
Voltage
VO Output Voltage
VO Efficiency
Brownout
Threshold
Vol1
Voh1
Vvo1
Vvo2
Voeff1
Voeff2
Vobvt
Test Conditions
Operating
HRNEN low; No loads; DC-DC
Running
HRNEN low; No loads;
VO=5V; Vlx=0.5V
Same conditions as above for Iddq
HRNEN Input, Vin=VDD or VSS
FEED=+22V; VO=10V
FEED=-10V; VO=10V
HRNEN Input
HRNEN Input
HORNB or HORNS; Iout=16mA;
Vdd=3V
HORNB or HORNS; VO=10V;
Iout=-16mA; Vdd=HRNEN=3V
Vdd=3V; HRNEN=3V: Iout=10mA
Vdd=3V; HRNEN=0V; Iout=10mA
Iload= 10mA, Vdd=3V; HRNEN=0V
Iload=100uA; Vdd=3V; HRNEN=0V
Falling edge of VO
Limits
Min
Typ
2.0
—
—
14
—
7
—
4
-100
—
—
20
-50
-15
—
—
2.3
—
—
.3
9.5
9.7
8.5
10
3.5
4
—
85
—
75
3.2
3.6
Max
5.0
—
Units
V
uA
10.5 uA
7.5
uA
100 nA
50
uA
—
uA
1
V
—
V
.5
V
—
V
11
V
4.4
V
—
%
—
%
4.0
V
Notes on Electrical Characteristics:
1. DC-DC converter in high boost mode (normal VO=10V) can draw current pulses of greater than 1 Amp and is therefore very
sensitive to series resistance. Critical components of this resistance are the inductor DC resistance, the internal resistance of the
battery and the resistance in the connections from the inductor to the battery, from the inductor to the LX pin and from the Vss2 pin
to the battery. In order to function properly under full load at Vdd=2V, the total of the inductor and the interconnect resistances
should not exceed 0.3 ohm. The internal battery resistance should be no more than 0.5 ohm and a low ESR capacitor of 10uF or
more should be connected in parallel with the battery to average current over the boost converter cycle.
2. In the Electrical Characteristics Table, wherever a specific VO value is listed under test conditions, the VO is forced externally
with the inductor disconnected and the DC-DC converter is not running.
3. The brown-out threshold voltage is the VO voltage at which the horn will be disabled.
4. The limits shown are 100% tested at 25C only. Test limits are guard-banded based on temperature characterization to guarantee
compliance at temperature extremes.
© 2009 Microchip Technology Inc.
DS22159B-page 2
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