TB7110F Datasheet, PDF (3/18 Pages) Toshiba Semiconductor – Buck DC-DC Converter IC갋Series Regulator IC

Absolute Maximum Ratings (Ta = 25°C) (Note)
Characteristics
Input pin voltage
Input pin voltage
Switch pin voltage
(Note 1)
Feedback1 pin voltage
Feedback2 pin voltage
Enable pin voltage
Switch pin current
Output pin current
Power dissipation
(Note 2)
Operating junction temperature
Junction temperature
(Note 3)
Storage temperature
Symbol
V_IN1
V_IN2
V_LX
V_FB1
V_FB2
V_EN
I_LX
I_OUT2
P_D
Tjopr
T_j
T_stg
Rating
Unit
-0.3 to 30
V
-0.3 to 30
V
-0.3 to 30
V
-0.3 to 30
V
-0.3 to 30
V
-0.3 to 30
V
-1.8
A
-0.8
A
2.2
W
-40 to 125
℃
150
°C
-55 to 150
°C
Thermal Resistance Characteristics
Characteristics
Thermal resistance, junction to ambient
Thermal resistance, junction to case (Tc=25℃)
Symbol
R_{th (j-a)}
R_{th (j-c)}
Max
44.6
(Note 2)
4.17
Unit
°C/W
°C/W
TB7110F
Note: Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even
if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum
ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc)
Note 1: The switch pin voltage (V_LX) doesn’t include the peak voltage generated by TB7110F’s switching.
A negative voltage generated in dead time is permitted among the switch pin current (I_LX).
Note 2:
Glass epoxy board
FR-4
25.4 × 25.4 × 0.8
(Unit: mm)
Single-pulse measurement: pulse width t=10(s)
Note 3: The TB7110F may go into thermal shutdown at the rated maximum junction temperature. Thermal design is
required to ensure that the rated maximum operating junction temperature, T_jopr, will not be exceeded.
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2011-05-19