TEA1207T Philips Semiconductors, TEA1207T Datasheet - Page 10

• Manufacturer Part Number: TEA1207T
• Description: High efficiency DC/DC converter
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Notes
1. The undervoltage lockout voltage shows wide specification limits since it decreases at increasing temperature. When
2. When V
3. V
4. The current limit is defined by an external resistor R
5. The specified efficiency is valid when using an output capacitor having an ESR of 0.10
6. If the applied HIGH-level voltage is less than V
1999 Oct 21
Timing
f
f
t
Temperature
T
T
Digital levels
V
V
sw
sync
res
SYMBOL
2
amb
max
lL
IH
High efficiency DC/DC converter
the temperature increases, the minimum supply voltage of the digital control part of the IC decreases and therefore
the correct operation of this function is guaranteed over the whole temperature range.
conducting (100% duty cycle), resulting in V
current limit increases in proportion to the programmed current limiting level.
inductor (Coilcraft DT1608C-103).
3
is the voltage on pin 3 (UPOUT/DNIN).
I
is lower than the target output voltage but higher than 2.8 V, the P-type power MOSFET will remain
efficiency downconversion
switching frequency
synchronization clock input
frequency
response time
ambient temperature
internal cut-off temperature
LOW-level input voltage
on pins 1, 5 and 8
HIGH-level input voltage
on pin 1
on pins 5 and 8
PARAMETER
O
following V
3
V
L1 = 10 H; note 5
PWM mode
from standby to P
note 6
I
I
I
I
I
I
I
I
1 V, the quiescent current (l
= 3.6 V; V
L
L
L
L
L
L
L
lim
= 1 mA
= 10 mA
= 50 mA
= 100 mA
= 200 mA
= 500 mA
= 1 A; pulsed
CONDITIONS
10
(see Section “Current limiting resistors”). Accuracy of the
I
.
O
= 2.0 V;
o(max)
220
4
150
0
V
0.55V
40
3
MIN.
q
0.4
) of the device will increase.
3
86
91
92
92
93
89
81
275
6.5
50
+25
175
TYP.
and a 10 H small size
Preliminary specification
330
20
+80
200
0.4
V
V
TEA1207T
3
3
MAX.
+ 0.3
+ 0.3
%
%
%
%
%
%
%
kHz
MHz
V
V
V
UNIT
C
C
s