AN8016NSH Datasheet, PDF (8/17 Pages) Panasonic Semiconductor – Single-channel 1.8-volt step-up DC-DC converter control IC

AN8016NSH
Voltage Regulators
s Usage Notes
• Notes on IC power dissipation
Since the power dissipation in this IC increases proportionally with the supply voltage, applications must be careful
to operate so that the actual power dissipation does not exceed the power dissipation.
Since the output current set by the application circuit flows in the IC during the period corresponding to the output
on duty factor (Du, where Du_max is 0.85), the IC power dissipation P is given by the following formula.
P = (V_CC − V_BEQ1) × I_OUT × Du + V_CC × I_CC < P_D
s Application Notes
[1] Power dissipation for the SSOP010-P-0225 package
P_D  T_a
400
386
Glass epoxy printed
circuit board
(50 × 50 × t0.8 mm³)
R_th(j−a) = 259°C/W
300
287
Independent IC
without a heat sink
Rth(j−a) = 348°C/W
200
154
115
100
0
0
25
50
75 85 100
125
150
Ambient temperature T_a (°C)
9