No. 5969-2/7
LA5633
Parameter Symbol Conditions Ratings Unit
Input voltage V
IN
max VIN1 ≥ VIN2 ≥ VIN3 35 V
Enable pin voltage V
EN
max EN1, EN2 VINmax V
Allowable power dissipation Pd max
With an arbitrarily large heat sink 15 W
With no heat sink 4.3 W
Junction to case thermal resistance
θ
j-c 3 °C/W
Junction to atmosphere thermal resistance
θ
j-a 29.07 °C/W
Operating temperature Topr –20 to +80 °C
Storage temperature Tstg –55 to +150 °C
Junction temperature Tj max 150 °C
Specifications
Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
I
O
1 Regulator 1 5 to 350 mA
Output current
I
O
2 Regulator 2 1 to 250 mA
I
O
3 Regulator 3 1 to 100 mA
I
O
4 Regulator 4 5 to 650 mA
Operating Conditions at Ta = 25°C
Parameter Symbol Conditions
Ratings
Unit
min typ max
Regulator 1 [V
EN
1 = low, VO1: on, VIN1 = 20 V, IO1 = 350 mA]
Output voltage 1 V
O
1 14.9 15.7 16.5 V
Dropout voltage
V
DROP
1-1 0.3 0.5 V
V
DROP
1-2 IO1 = 175 mA 0.15 0.3 V
Line regulation ∆V
OLN
1 17.5 V ≤ VIN1 ≤ 23 V 20 100 mV
Load regulation ∆V
OLD
1 5 mA ≤ IO1 ≤ 350 mA 40 200 mV
Peak output current I
OP
1 350 540 mA
Output short-circuit current I
OSC
1 150 mA
Output on control voltage V
ENL
1 VO1 : ON 1.0 V
Output off control voltage V
ENH
1 VO1 : OFF 4.0 VIN1 V
Output low-level voltage V
O
1 OFF 0.2 V
Output noise voltage V
NOISE
1 10 Hz ≤ f ≤ 100 kHz 110 µVrms
Ripple rejection Rrej1 f = 120 Hz, 18 V ≤ V
IN
1 ≤ 23 V 50 dB
Regulator 2 [V
EN
2 = low, VO2: on, VIN2 = 11 V, IO2 = 250 mA]
Output voltage 2 V
O
2 8.55 9.0 9.45 V
Dropout voltage V
DROP
2 0.3 0.5 V
Line regulation ∆V
OLN
2 10.45 V ≤ VIN2 ≤ 23 V 20 100 mV
Load regulation ∆V
OLD
2 1 mA ≤ IO2 ≤ 250 mA 30 100 mV
Peak output current I
OP
2 250 270 mA
Output short-circuit current I
OSC
2 70 mA
Output on control voltage V
ENL
2 VO2 : ON 1.0 V
Output off control voltage V
ENH
2 VO2 : OFF 4.0 VIN2 V
Output low-level voltage V
O
2 OFF 0.2 V
Output noise voltage V
NOISE
2 10 Hz ≤ f ≤ 100 kHz 110 µVrms
Ripple rejection Rrej2 f = 120 Hz, 11 V ≤ V
IN
2 ≤ 23 V 50 dB
Regulator 3 [V
EN
2 = low, VO3 on, VIN1 = 20 V, IO3 = 100 mA]
Output voltage 3 V
O
3 11.4 12.0 12.6 V
Dropout voltage V
DROP
3 0.3 0.5 V
Line regulation ∆V
OLN
3 13.6 V ≤ VIN1 ≤ 23 V 20 100 mV
Load regulation ∆V
OLD
3 1 mA ≤ IO3 ≤ 100 mA 20 50 mV
Peak output current I
OP
3 100 150 mA
Output short-circuit current I
OSC
3 40 mA
Output on control voltage V
ENL
2 VO3 : ON 1.0 V
Operating Characteristics at Ta = 25°C in the stipulated test circuit
Continued on next page.