TEA1202 Philips Semiconductors, TEA1202 Datasheet - Page 18

• Manufacturer Part Number: TEA1202
• Description: Battery power unit
• Manufacturer: Philips Semiconductors

Philips Semiconductors
LDO
The output voltage of each LDO can be set by the external
feedback resistors. Their values can be derived from the
formulae:
The maximum value for each of the LDO feedback
resistors is 500 k .
2000 Jun 08
V
V
O
O
Battery power unit
=
=
FEEDBACK RESISTORS
V
V
ref
ref
1
1
+
+
R3
------- -
R4
R5
------- -
R6
R3, R4, R5
AND
R6
18
L
Resistor R7 is connected between pin LBO and the input
or output pin and must be 330 k or higher.
A 1-cell NiCd or NiMH battery can be connected directly to
pin LBI1.
A higher battery voltage must be applied to pin LBI2 using
a divider circuit with resistor R8 and R9. In that situation,
capacitor C6 (10 F) must be connected between pin LBI1
and ground. The low-battery detection level for a higher
battery voltage can be set by the resistors at pin LBI2
using the formula:
V
OW BATTERY DETECTOR COMPONENTS
LBI2
=
0.90
1
+
R8
------- -
R9
Objective specification
TEA1202TS
R7, R8, R9
AND
C6