TEA1205 Philips Semiconductors, TEA1205 Datasheet - Page 3

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

Philips Semiconductors
QUICK REFERENCE DATA
Note
1. The NFET current limit is set by an external 1% accurate resistor R
1998 Mar 24
Supplies
V
V
Efficiency; see Figs 6 and 7
Current levels
I
I
I
I
Power MOSFETS
R
R
Timing
f
t
f
q
SHDWN
limN
lx
sw
res
sync
SYMBOL
O
start
dsON(N)
dsON(P)
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
lim
= 315 , the average inductor current will be limited to 2.3 A typical.
output voltage
start-up voltage
efficiency
quiescent current at pin 3
shut-down current
NFET current limit
max. continuous current at pin 5
pin-to-pin resistance NFET
pin-to-pin resistance PFET
switching frequency
response time from standby to P
synchronisation input frequency
up from 2.4 to 3.3 V
up from 3.6 to 5.5 V
PARAMETER
max
VSEL = LOW
VSEL = HIGH
1 mA < I
1 mA < I
note 1
3
CONDITIONS
L
L
< 1.0 A
< 1.0 A
lim
= 890 V/ R
lim
connected between pin 7 and pin 6 (ground).
lim
so the use of R
3.13
5.23
1.6
80
83
50
0.9 I
0.08
0.10
150
MIN.
lim
5.55
3.34
2.0
90
90
60
2
I
0.12
0.16
200
25
13
lim
TYP.
lim
Preliminary specification
= 315
TEA1205AT
5.85
3.54
2.2
95
94
70
10
1.1 I
1.0
0.20
0.25
240
MAX.
lim
will lead to a
V
V
V
%
%
A
A
kHz
MHz
UNIT
A
A
s