MAX8506 MAXIM [Maxim Integrated Products], MAX8506 Datasheet - Page 4

• Manufacturer Part Number: MAX8506
• Description: PWM Step-Down DC-DC Converters with 75mohm Bypass FET for WCDMA and cdmaOne Handsets
• Manufacturer: MAXIM [Maxim Integrated Products]

PWM Step-Down DC-DC Converters with 75m Ω
Bypass FET for WCDMA and cdmaOne Handsets
(V
4
BATT
_______________________________________________________________________________________
100
100
90
80
70
60
50
90
80
70
60
50
= V
0
1
BATTP
NORMAL MODE
EFFICIENCY vs. OUTPUT VOLTAGE
EFFICIENCY vs. LOAD CURRENT
V
0.5
OUT
= 2.5V;
= 3.6V, SHDN = SKIP = BATT, HP = GND, T
1.0
IN NORMAL MODE
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)
R
10
LOAD
R
1.5
1000
LOAD
= 15Ω
900
800
700
600
500
400
300
200
100
V
NORMAL MODE
OUT
V
PWM
2.0
= 5Ω
SUPPLY CURRENT vs. SUPPLY VOLTAGE
2.0
OUT
= 1.2V;
SKIP = GND
V
PWM
= 2.5V;
100
R
OUT
LOAD
2.5
2.5
SKIP = GND
= 1.2V;
= 10Ω
3.0
IN NORMAL MODE
3.0
SUPPLY VOLTAGE (V)
1000
3.5
3.5
V
OUT
V
OUT
4.0
= 1.2V
= 3.4V
4.5
V
100
OUT
150
120
90
80
70
60
50
90
60
30
0
5.0
= 0.4V
0
0
DROPOUT VOLTAGE vs. LOAD CURRENT
V
HP = BATT
IN
EFFICIENCY vs. OUTPUT VOLTAGE
= 3.6V
5.5
0.5
A
500
= +25°C, unless otherwise noted.) (See the Typical Application Circuits.)
1.0
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)
R
IN PWM MODE
LOAD
R
1.5
LOAD
= 15Ω
1000
HEAVY-LOAD SWITCHING WAVEFORM
V
LOAD = 10Ω
OUT
= 5Ω
Typical Operating Characteristics
2.0
= 1.2V
R
LOAD
2.5
1500
= 10Ω
3.0
1µs/div
2000
3.5
MAX8506 toc08
100
90
80
70
60
50
6
5
4
3
2
1
0
2.5
2.0
SUPPLY CURRENT vs. SUPPLY VOLTAGE
V
EFFICIENCY vs. INPUT VOLTAGE
OUT
2.5
3.0
V
2V/div
V
AC-COUPLED
20mV/div
LX
OUT
= 0.4V
3.0
SUPPLY VOLTAGE (V)
INPUT VOLTAGE (V)
3.5
IN PWM MODE
V
OUT
3.5
V
= 1.2V
4.0
OUT
V
4.0
OUT
= 1.2V
SKIP = GND
R
V
LOAD
= 0.4V
4.5
OUT
4.5
= 3.4V
= 10Ω
5.0
5.0
5.5
5.5