MAX8505 MAXIM [Maxim Integrated Products], MAX8505 Datasheet - Page 7

• Manufacturer Part Number: MAX8505
• Description: 3A, 1MHz, 1% Accurate, Internal Switch Step-Down Regulator with Power-OK
• Manufacturer: MAXIM [Maxim Integrated Products]

(Typical values are at V
0.810
0.805
0.800
0.795
0.790
0.4
0.3
0.2
0.1
5.5
4.5
3.5
2.5
0
-40
2.5
2.5
f
_______________________________________________________________________________________
SW
3A, 1MHz, 1% Accurate, Internal Switch
OUTPUT SHORT-CIRCUIT CURRENT
SHUTDOWN SUPPLY CURRENT
-15
= 1MHz
IN
3.0
3.0
= V
REFERENCE VOLTAGE
vs. INPUT VOLTAGE
vs. TEMPERATURE
vs. INPUT VOLTAGE
10
TEMPERATURE (°C)
INPUT VOLTAGE (V)
3.5
CC
INPUT VOLTAGE (V)
3.5
Step-Down Regulator with Power-OK
= V
35
4.0
4.0
CTL
60
4.5
= 5V, V
4.5
f
f
85
SW
SW
5.0
= 1MHz
5.0
= 1MHz
OUT
110
Typical Operating Characteristics (continued)
5.5
5.5
= 1.2V, I
OUT
= 3A, and T
A
= +25°C, unless otherwise noted.)
120
100
5.5
5.4
5.3
5.2
5.1
5.0
4.9
4.8
4.7
4.6
4.5
80
60
40
20
0
3.00
0.8
CURRENT LIMIT vs. OUTPUT VOLTAGE
f
SW
GND-MEASURED TEMPERATURE
= 1MHz
T
1.3
A
(V
TRANSIENT RESPONSE
3.25
= -40°C
vs. OUTPUT CURRENT
IN
OUTPUT CURRENT (A)
OUTPUT VOLTAGE (V)
= 5V, V
1.8
40µs/div
T
3.50
A
OUT
= +25°C
2.3
= 1.2V)
T
3.75
A
V
= +85°C
V
OUT
2.8
IN
MAX8505 toc13
= 5V,
= 1.5V
4.00
3.3
OUTPUT VOLTAGE
AC-COUPLED
100mV/div
2.25A
0.75A
0
OUTPUT
CURRENT
1A/div
7