RE46C107 R&E International, Inc., RE46C107 Datasheet - Page 4

• Manufacturer Part Number: RE46C107
• Description: Dc To Dc Converter, Voltage Regulator And Piezoelectric Horn Driver
• Manufacturer: R&E International, Inc.

RE46C107
DC to DC Converter, Voltage Regulator and Piezoelectric Horn Driver
Product Specification
Electrical Characteristics (continued)
Limits apply at Vdd=3V, Vss=Vss2=0V, Creg=10uF, Cvo=10uF, T
Typical values are at T
Notes on Electrical Characteristics:
1/ DC-DC converter in high boost mode (nominal 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 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 draw 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 regulator and horn will be disabled. At VO voltages below the
brown-out threshold Vreg will be pulled to Vss.
4/ In normal operation, the regulator will provide high-side current of up to 20mA, but current sinking capability is typically under 1uA.
The overvoltage clamp is intended to limit the voltage at Vreg when it is pulled up by an external source.
5/ The limits shown are 100% tested at 25C only. Test limits are guard-banded based on temperature characterization to guarantee
compliance at temperature extremes.
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Page 4 of 7
VREG over voltage
Propagation Delay
LBST to LBOUT
VO-to-Brownout
VREG Voltage
Brownout Pull
VO Efficiency
Parameter
Low Battery
VREG Load
Regulation
Threshold
Threshold
Brownout
Margin
clamp
down
A
=27°C.
Symbol
Vregld1
Vregld2
Vobvtm
This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Voeff1
Voeff2
Tplhlb
Vreg1
Vreg2
Vobvt
Vlbat
Vcl1
Vcl2
Ibt
Test
Pin
16
10
10
10
10
11
11
10
10
10
3
Iload= 10mA, Vdd=3V;
HRNEN=0V
Iload=100uA; Vdd=3V;
HRNEN=0V
LBST=Vreg
Vdd=2.1; LBSET Cload=5pF
Iout<20mA; REGSEL=Vdd
Iout<20mA; REGSEL=Vss
Iout=0 to 20mA; HRNEN=Vreg
Iout=0 to 20mA; HRNEN=0V
Falling edge of VO
Vv02 -Vobvt
VO=3.0V; Vreg=2.0V
REGSEL=Vdd
REGSEL=0V
Facsimile 610.992.0734
Test Conditions
A
=0°C to 50°C, unless otherwise noted.
3.75
3.35
Min
100
3.1
2.8
20
E-mail: [e-mail]
Limits
Typ
DS-RE46C107-012107
400
2.4
3.3
3.0
3.6
3.6
85
75
30
50
50
40
4
R&E International
Max
4.25
3.85
3.5
3.2
Units
mV
mV
mV
mA
us
%
%
V
V
V
V
V
V