HA13173H Datasheet, PDF (6/24 Pages) Renesas Technology Corp – Multiple Voltage Regulator for Car Audio

HA13173H
External Parts Lineup
Parts
No.
Function
Range of
Recommended
Operation with Different Value from the
Range of Recommended Value
More than the Range Less than the Range
C1
Bypass capacitor
Upper 100 µF
—
Unstable
Lower ripple rejection
ratio
C2
To prevent oscillation
0.1 µF
Stability improve
Unstable
CBUP
B backup capacitor
0.1 to 1000 µF
Backup time becomes Unstable
long
CCD
CILM
To prevent oscillation
0.1 to 1000 µF
Unconfirmed
Unstable
CVDD
CDSP
CAUDIO
CFREG
CEXT
To prevent oscillation
0.1 to 470 µF
Unconfirmed
Unstable
DBUP
IF ≥ 200 mA
Be careful of the maximum rating
DEXT1
DEXT2
Protection against mistake in joining.
Terminal protection for short circuit to
+B when VCC terminal is open and
for short circuit to GND when GND
terminal is open.
We recommend Schottky barrier
diodes.
IF ≥ 1 A
—
Be careful of the
maximum rating. The
ability to protect
terminal lower. And
there is some
possibility of
destruction.
RFREG1 Output voltage = (1 +
RFREG2 RFREG1/RFREG2) × 1.26 V
100 to 10 kΩ
Unstable
Loss of current
increases
GFREG3 Resistance for limiting base current of Choose resistance by a required output current value and hFE of
PNP transistor
PNP transistor
QFREG
Output PNP transistor for FREG
(We recommend Renesas 2SB857.)
hFE = 50 to 200
Choose resistance by a required output current
value and hFE of PNP transistor
Unstable
Lower output current
capability
Notes: 1. We recommend Polyester film capacitor. To improve stability, take notes of the below precautions.
(1) Use capacitor that is temperature independent.
(2) Use capacitor that is bias voltage independent.
(3) In order to bypass high frequency noise efficiently, mount the capacitor as close as possible to the VCC
and GND of IC to eliminate PCB pattern inductance.
2. For using of the lower limit of recommended value, take notes of the below precautions.
(1) Use capacitor that is temperature independent.
(2) Use capacitor that is bias voltage independent.
(3) To eliminate PCB pattern inductance mount the capacitor as close as possible to the output pin and
GND of IC.
3. To improve stability, take notes of the below precautions.
(1) Use capacitor that is temperature independent.
(2) Use capacitor that is bias voltage independent.
(3) ESR needs to be less than 10 Ω in all the temperature ranges to be used.
(4) To eliminate PCB pattern inductance mount the capacitor as close as possible to the output pin and
GND of IC.
Rev.1.00 Jan 16, 2007 page 6 of 23