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MAX8896EREE+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
MAX8896
Dual PWM Step-Down Converter in a 2mm x
2mm Package for WCDMA PA and RF Power
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= V
IN1
= V
IN2
= V
PAEN
= V
RFEN1
= V
RFEN2
= 3.6V, V
REFIN
= 0.72V, T
A
= -40°C to +85°C, typical values are at T
A
= +25°C,
unless otherwise noted.) (Note 2)
PARAMETER CONDITIONS MIN TYP MAX UNITS
LDO
Output Voltage, V
LDO
V
OUT2
= 3.1V, I
LDO
= 1mA to 200mA 2.744 2.800 2.856 V
Current Limit V
OUT2
= 3.1V, V
LDO
= 0V 250 420 750 mA
Dropout Voltage V
OUT2
= 3.1V, I
LDO
= 100mA 70 mV
Line Regulation V
OUT2
stepped from 3.5V to 5.5V, I
LDO
= 100mA 2.4 mV
Load Regulation V
OUT2
= 3.1V, I
LDO
stepped from 50µA to 200mA 25 mV
Power-Supply Rejection
∆V
LDO
/∆V
OUT2
V
OUT2
= 3.1V, 10Hz to 10kHz,
C
LDO
= 1µF, I
LDO
= 100mA
65 dB
Output Noise
100Hz to 100kHz,
C
LDO
= 1µF, I
LDO
= 100mA
16 µV
RMS
Minimum Output Capacitance for
Stable Operation
0 < I
LDO
< 200mA 1 µF
Output Leakage Current V
OUT2
= 3.1V, V
RFEN1
= V
RFEN2
= 0V 25 nA
Power-Up Delay From V
RFEN1
or V
RFEN2
rising to V
LDO
rising 50 µs
Note 2: All devices are 100% production tested at T
A
= +25°C. Limits over the operating temperature range are guaranteed by
design.
MAX8896
Dual PWM Step-Down Converter in a 2mm x
2mm Package for WCDMA PA and RF Power
_______________________________________________________________________________________ 5
0
20
10
40
30
70
60
50
80
0 200100 300 400 500 600 700
OUT1 PA BYPASS MODE DROPOUT
VOLTAGE vs. PA LOAD CURRENT
MAX8896 toc01
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
V
IN1
= 3.2V
V
IN1
= 3.6V
V
IN1
= 4.2V
0
20
10
40
30
60
50
70
90
80
100
0.5 1.5 2.01.0 2.5 3.0 3.5 4.0 4.5
OUT1 PA STEP-DOWN CONVERTER
EFFICIENCY vs. OUTPUT VOLTAGE
MAX8896 oc02
OUTPUT VOLTAGE (V)
EFFICIENCY (%)
BYPASS MODE
V
IN1
= 4.2V
V
IN1
= 3.6V
V
IN1
= 3.2V
R
PA
= 7.5Ω
70
85
80
75
95
90
100
100 200 300 400 500 600 700
OUT1 PA STEP-DOWN CONVERTER
EFFICIENCY vs. LOAD CURRENT
V
PA
= 3.18V
MAX8896 toc03
LOAD CURRENT (mA)
EFFICIENCY (%)
70
75
95
90
85
80
100
50 150 250 350 450 550 650
OUT1 PA STEP-DOWN CONVERTER
EFFICIENCY vs. LOAD CURRENT
V
PA
= 2.58V
MAX8896 toc04
LOAD CURRENT (mA)
EFFICIENCY (%)
70
75
95
90
85
80
100
50 150 250 350 450
OUT1 PA STEP-DOWN CONVERTER
EFFICIENCY vs. LOAD CURRENT
V
PA
= 1.58V
MAX8896 toc05
LOAD CURRENT (mA)
EFFICIENCY (%)
70
75
95
90
85
80
100
50 150 250
OUT1 PA STEP-DOWN CONVERTER
EFFICIENCY vs. LOAD CURRENT
V
PA
= 1.18V
MAX8896 toc06
LOAD CURRENT (mA)
EFFICIENCY (%)
60
75
65
70
85
80
95
90
100
25 75 125 175 225
OUT1 PA STEP-DOWN CONVERTER
EFFICIENCY vs. LOAD CURRENT
V
PA
= 0.77V
MAX8896 toc07
LOAD CURRENT
(
mA
)
EFFICIENCY (%)
OUT1 PA STEP-DOWN CONVERTER
EFFICIENCY vs. LOAD CURRENT
V
PA
= 0.56V
MAX8896 toc08
60
75
65
70
85
80
95
90
100
25 75 125 175 225
LOAD CURRENT (mA)
EFFICIENCY (%)
1.70
1.76
1.74
1.72
1.80
1.78
1.88
1.86
1.84
1.82
1.90
0 100 200 300 400 500 600 700
OUT1 PA STEP-DOWN CONVERTER
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX8896 toc09
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
R
L
= 0.09Ω
Typical Operating Characteristics
(V
CC
= V
IN1
= V
IN2
= 3.6V, V
REFIN
= 0.72V, circuit of Figure 3, T
A
= +25°C, unless otherwise noted.)
MAX8896
Dual PWM Step-Down Converter in a 2mm x
2mm Package for WCDMA PA and RF Power
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
CC
= V
IN1
= V
IN2
= 3.6V, V
REFIN
= 0.72V, circuit of Figure 3, T
A
= +25°C, unless otherwise noted.)
0.5
1.5
1.0
2.5
2.0
3.5
3.0
4.0
0.2 0.6 0.80.4 1.0 1.2 1.4 1.6 1.8 2.0
OUT1 PA STEP-DOWN CONVERTER OUTPUT
VOLTAGE vs. REFIN VOLTAGE
MAX8896 toc10
REFIN VOLTAGE (V)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE ERROR
vs. LOAD CURRENT
MAX8896 toc11
-4
-1
-3
-2
1
0
3
2
4
0200100 400 600300 500 700 800
LOAD CURRENT (mA)
OUTPUT VOLTAGE ERROR (%)
V
OUT
= 3.18V
V
OUT
= 0.56V
OUT1 LIGHT-LOAD SWITCHING
WAVEFORMS
MAX8896 toc12
V
LX1
I
L1
V
PA
2V/div
200mA/div
20mV/div
(AC-COUPLED)
200ns/div
5mA LOAD
20µs/div
OUT1 STARTUP AND SHUTDOWN
V
PAEN
5V/div
1V/div
500mA/div
MAX8896 toc14
V
PA
I
L1
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

MAX8896EREE+T

Mfr. #:
Buy MAX8896EREE+T
Manufacturer:
Maxim Integrated
Description:
Switching Voltage Regulators Dual PWM Step-Down Converter
Lifecycle:
New from this manufacturer.
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