TEA1206 Philips Semiconductors, TEA1206 Datasheet - Page 10

• Manufacturer Part Number: TEA1206
• Description: High efficiency DC/DC converter
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Notes
1. At V
2. The undervoltage lockout level shows wide specification limits since it decreases at increasing temperature. Since
3. V
4. 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 is less than V
1999 Sep 16
handbook, full pagewidth
Temperature
T
T
Digital levels
V
V
V
SYMBOL
amb
max
lL
IH
IH
High efficiency DC/DC converter
(1) Represents the curve for upconversion from 3.6 to 4.6 V. The solid line indicates PFM and the dashed line indicates PWM.
(2) Represents the curve for downconversion from 3.6 to 1,8 V. The solid line indicates PFM and the dashed line indicates PWM.
V
resulting in V
the minimum supply voltage of the digital control part also decreases when temperature goes up, correct operation
of this function is guaranteed over the whole temperature range.
0.5 and 5.0 A with a spread of 17.5%.
DT1608C-103 10 H small size inductor.
i
efficiency
= 3.6 V; L = 10 H (DT1608-103); C
3
is the voltage at pin 3 (UPOUT/DNIN).
(%)
i
lower than the target output voltage, but higher than 2.8 V, the PFET will remain conducting (100% duty cycle),
100
90
80
70
60
1
operating ambient temperature
internal cut-off temperature
LOW-level input voltage pins 1, 5 and 8
HIGH-level input voltage pin 1
HIGH-level input voltage pins 5 and 8
o
following the input voltage.
PARAMETER
out
= 330 F (Sprague 595D) capacitor.
Fig.5 Efficiency as a function of load current I
3
1 V, the quiescent current level of the device will increase.
10
(1)
(2)
lim
, having 1% accuracy. The typical value is presettable between
note 6
note 6
10
CONDITIONS
10
2
150
0
V
0.55V
40
L
3
MIN.
.
0.4
3
+25
175
TYP.
I L (mA)
and a Coilcraft
Preliminary specification
+80
200
0.5
V
V
TEA1206T
MAX.
3
3
+ 0.3 V
+ 0.3 V
MGM668
V
C
C
10
UNIT
3