MAX8805Y MAXIM [Maxim Integrated Products], MAX8805Y Datasheet - Page 5

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

(V
wise noted.)
IN1A
100
140
120
100
100
90
80
70
60
80
60
40
20
90
80
70
60
50
0
PA STEP-DOWN CONVERTER EFFICIENCY
0.5
PA STEP-DOWN CONVERTER EFFICIENCY
0
0
= V
BYPASS MODE DROPOUT VOLTAGE
vs. OUTPUT VOLTAGE (MAX8805Z)
V
0.2
PA
vs. LOAD CURRENT (MAX8805Y)
1.0
IN1B
100
= 1.8V
V
IN1
V
0.4 0.6
IN1
vs. PA LOAD CURRENT
1.5
= 3.2V
= V
PA LOAD CURRENT (A)
= 3.2V
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)
200
V
2.0
IN1
IN2
V
IN1
V
0.8 1.0 1.2 1.4 1.6 1.8
= 3.6V
_______________________________________________________________________________________
IN1
V
= 3.2V
2.5
300
= 3.6V, V
IN1
= 3.6V
2mm x 2mm WLP for WCDMA PA Power
= 4.2V
3.0
BYPASS MODE
600mA PWM Step-Down Converters in
400
V
R
3.5
V
IN1
PA
IN1
PA
= 10Ω
= 3.6V
500
= 4.2V
4.0
= 1.2V, V
4.5
600
LDO1
100
100
100
90
80
70
60
90
80
70
60
90
80
70
60
50
= 2.85V, V
PA STEP-DOWN CONVERTER EFFICIENCY
PA STEP-DOWN CONVERTER EFFICIENCY
0.5
0.5
PA STEP-DOWN CONVERTER EFFICIENCY
0
vs. OUTPUT VOLTAGE (MAX8805Y)
V
vs. OUTPUT VOLTAGE (MAX8805Z)
PA
vs. LOAD CURRENT (MAX8805Z)
1.0
1.0
V
= 1.2V
100
IN1
V
IN1
V
1.5
1.5
= 3.2V
V
IN1
LDO2
IN1
= 3.2V
OUTPUT VOLTAGE (V)
V
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)
200
V
IN1
= 3.2V
= 3.6V
IN1
2.0
2.0
= 3.6V
= 3.6V
V
= 2.85V, R
IN1
V
2.5
2.5
300
IN1
V
= 4.2V
IN1
= 4.2V
= 4.2V
Typical Operating Characteristics
3.0
3.0
BYPASS MODE
400
BYPASS MODE
R
3.5
3.5
R
PA
PA
PA
= 10Ω
= 7.5Ω
500
= 7.5Ω, circuit of Figure 5, T
4.0
4.0
4.5
4.5
600
100
100
100
90
80
70
60
90
80
70
60
50
90
80
70
60
50
PA STEP-DOWN CONVERTER EFFICIENCY
0.5
PA STEP-DOWN CONVERTER EFFICIENCY
PA STEP-DOWN CONVERTER EFFICIENCY
0
0
V
vs. OUTPUT VOLTAGE (MAX8805Y)
V
PA
vs. LOAD CURRENT (MAX8805Z)
vs. LOAD CURRENT (MAX8805Y)
1.0
PA
= 1.2V
100
100
V
V
= 1.8V
IN1
V
IN1
IN1
1.5
= 3.2V
= 3.2V
V
= 3.2V
OUTPUT VOLTAGE (V)
IN1
LOAD CURRENT (mA)
LOAD CURRENT (mA)
V
200
200
A
IN1
2.0
= 3.6V
= +25°C, unless other-
= 3.6V
V
V
IN1
2.5
IN1
300
300
V
= 4.2V
IN1
= 3.6V
3.0
BYPASS MODE
= 4.2V
400
400
V
3.5
R
IN1
PA
= 4.2V
500
500
= 7.5Ω
4.0
4.5
600
600
5