MAX8805Y MAXIM [Maxim Integrated Products], MAX8805Y Datasheet - Page 6

• Manufacturer Part Number: MAX8805Y
• Description: 600mA PWM Step-Down Converters in 2mm x 2mm WLP for WCDMA PA Power
• Manufacturer: MAXIM [Maxim Integrated Products]

600mA PWM Step-Down Converters in
2mm x 2mm WLP for WCDMA PA Power
(V
wise noted.)
6
IN1A
_______________________________________________________________________________________
= V
IN1B
= V
IN2
1.25
1.20
1.15
1.10
1.05
-100
100
100
-20
-40
-60
-80
90
80
70
60
50
80
60
40
20
= 3.6V, V
0
PA STEP-DOWN CONVERTER EFFICIENCY
REFIN vs. REFIN TO OUT GAIN (MAX8805Z)
0.4
0
0
PA STEP-DOWN CONVERTER OUTPUT
V
PA
0.5
vs. LOAD CURRENT (MAX8805Z)
100
= 0.6V
VOLTAGE vs. LOAD CURRENT
100
0.6 0.7
V
V
PA
IN1
IN1
V
= 3.2V, NO LOAD
LOAD CURRENT (mA)
IN1
= 3.2V
LOAD CURRENT (mA)
= 1.2V, V
200
200
REFIN VOLTAGE (V)
MAX8805Z
0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5
= 3.6V
300
300
MAX8805Y
V
V
IN1
IN1
LDO1
= 4.2V
400
= 4.2V, NO LOAD
400
Typical Operating Characteristics (continued)
= 2.85V, V
500
500
600
600
LDO2
= 2.85V, R
100
-10
-30
-50
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
50
30
10
90
80
70
60
50
PA
REFIN vs. REFIN TO OUT GAIN (MAX8805Y)
PA STEP-DOWN CONVERTER EFFICIENCY
0.4
0
0
PA STEP-DOWN CONVERTER OUTPUT
= 7.5Ω, circuit of Figure 5, T
V
0.5
PA
vs. LOAD CURRENT (MAX8805Y)
VOLTAGE vs. REFIN VOLTAGE
= 0.6V
100
0.6 0.7
0.4
V
IN1
V
V
IN1
= 3.2V
LOAD CURRENT (mA)
IN1
200
REFIN VOLTAGE (V)
REFIN VOLTAGE (V)
0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5
= 3.2V, NO LOAD
V
= 3.6V
0.8
IN1
= 4.2V
300
V
IN1
1.2
= 4.2V, NO LOAD
400
1.6
500
A
= +25°C, unless other-
2.0
600