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iC-JJ Power Management IC with Autarky Function 0 pages
iC-JJ
POWER MANAGEMENT iC
Rev A1, Page 1/17
MFQ44
FEATURES APPLICATIONS
° Supply voltage range of VBAT= 6 to 16.5V
° Autarky function to maintain temporarily output voltages with
breakdown of supply voltage
° Adjustable 200mA boost converter (VA1= VBAT+2V to 48V)
° 6V step-down regulator with integrated 125kHz oscillator
° Two downstream 5V linear regulators with 200mA/60mA
output current
° 12V/30mA tri-state output
° Low standby current of typ. 30ìA
° Integrated high/low-side drivers e.g. to attach indicator lamps
° Overtemperature shutdown of high- and low-side drivers
° Undervoltage detection
° Serial single-wire communication interface
° Watchdog for monitoring of the external ì-controller
° CMOS-compatible inputs
° TTL-/CMOS-compatible outputs
° ESD protection
° Universal voltage supply iC with
monitoring and autarky function
for the voltage supply of automotive
and industrial applications
PACKAGE
BLOCK DIAGRAM
© 2000
iC-Haus GmbH Tel. +49-6135-9292-0
Integrated Circuits Fax +49-6135-9292-192
Am Kuemmerling 18, D-55294 Bodenheim http://www.ichaus.com
VCC
VBAT+2V...48V +5V/200mA +5V/60mA
+12V/30mA ENABLE
STANDBY
REG VFP
iC-JJ
LVB
DRIVER
AUTARKY DRIVER
AUTARKY
CONTROL
CONVERTER
VVA VHL VH
VH-SWITCHING
VCC
REG VREF
VREF
OSCILLATOR
DRIVER
NRHD
COS
REFERENCE
BIAS
PAKS
PFL
PCRA
TCRD
TCRA
TFL
TAKS
NCRD
NAKS
NFL
CRA
+VBAT
PGND
GND
DETECTION
K-INTERFACE
50mA
DRIVER
REGULATOR
TEMPERATUR
ESD VB
VCC
+
+
VCC
HD
VA1x
VBL VA1 VB VA
BOOST
TWD
VBG
RSET
AGND
VMR
VM
AUTARKY
TEST AID
NVTA VTU RXD TXDK VFP TFP ENA NRES
LOGIC
+
IN-/OUTPUT
REG VCC
PCRD
100ìF
CVA1
150ìH
CVA
2200ìF
D2
33nF
LVH
270ìH
CVH
33ìF
CVCC
4.7ìF 1ìF
CVREF
CVFP
10nF
RKL
RKLR
511:
511:
RSET
10k:
CVBG
100nF
COS
RESET
WATCHDOG +
&
&
200mA 30mA
30mA
STAGES
D1 D3
LA1
R1
R2
CVB
100ìF
CKL
