TEA1205 Philips Semiconductors, TEA1205 Datasheet - Page 9

• Manufacturer Part Number: TEA1205
• Description: High efficiency DC/DC converter
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Notes
1. The NFET current limit is set by an external 1% accurate resistor R
2. V
3. If the applied high level is less than V
1998 Mar 24
Timing
f
t
f
Temperature
T
T
Digital levels
V
V
V
V
Sense pin resistance
R
SYMBOL
sw
res
sync
amb
max
lL
IH
IH
IH
SENSE
High efficiency DC/DC converter
The typical maximum instantaneous current is defined as: I
typical maximum current value of 2.83 A. The average inductor current during current limit also depends on
inductance value and resistive losses in all components in the power path. In normal application and when using
R
increase is 300 A in the event that pin 2 is at 2.0 V.
3
lim
is the voltage at pin 3 (OUT).
= 315 , the average inductor current will be limited to 2.3 A typical.
switching frequency
response time from standby to
P
synchronisation input frequency
operating ambient temperature
internal cut-off temperature
LOW-level input voltage pins
1, 2, 7 and 8
HIGH-level input voltage pin 1
HIGH-level input voltage pin 2
HIGH-level input voltage pin 8
SENSE pin resistance to GND
max
PARAMETER
3
1 V, the quiescent current level of the device will increase. The maximum
note 2
notes 2 and 3
notes 2 and 3
up to 3.3 V mode
up to 5.0 V mode
CONDITIONS
9
lim
= 890 V/ R
lim
connected between pin 7 and pin 6 (ground).
lim
so the use of R
150
150
0
V
2.0
2.9
437.2
662.2
20
3
MIN.
0.4
200
25
13
+25
165
546.5
827.8
TYP.
lim
Preliminary specification
= 315
TEA1205AT
240
+80
180
0.4
V
V
V
655.8
993.4
MAX.
3
3
3
+ 0.3 V
+ 0.3 V
+ 0.3 V
will lead to a
kHz
MHz
V
k
k
UNIT
C
C
s