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MAX1960EEP+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P29
MAX1960/MAX1961/MAX1962
2.35V to 5.5V, 0.5% Accurate, 1MHz PWM
Step-Down Controllers with Voltage Margining
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
(V
VCC
= 3.3V, Circuits of Figures 9–12, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Input Voltage Range 2.35 5.50 V
V
CC
Input Voltage UVLO Rising or falling 1.95 2.3 V
V
DD
Input Voltage UVLO Rising or falling 3.90 4.45 V
Output Voltage 0.8 V
MAX1960/MAX1962 (measured at FB) 0.795 0.805
SEL = GND
1.492
1.508
SEL = REF
1.789
1.809
SEL not connected
2.482
2.517
DC Output Accuracy
MAX1961/MAX1962
(FB = V
DD
),
measured at output
SEL = V
DD
3.272
3.339
V
Positive Voltage-Margining Shift MAX1960/MAX1961 3.8 4.2 %
Negative Voltage-Margining Shift MAX1960/MAX1961 -3.8 -4.2 %
FB Input Bias Current -0.2 +0.2 µA
Feedback Transconductance 1 3 mS
COMP Discharge Resistance In shutdown 100 Ω
FSET/SYNC = GND 450 550
Switching Frequency
FSET/SYNC = V
CC
880 1120
kHz
SYNC Frequency Range 450 1200 kHz
Maximum Duty Cycle f = 1MHz 80 %
Maximum Duty Cycle f = 500kHz 90 %
Quiescent Supply Current 15 mA
Shutdown Supply Current 15 µA
2.7V ≤ V
VCC
≤ 5.5V, I
LOAD
= 1mA to 50mA 4.75 5.25
2.35V ≤ V
VCC
≤ 2.7V, I
LOAD
= 1mA to 35mA,
C1 = 4.7µF, C6 = 22µF
4.45 5.25
V
DD
Output Voltage
2.35V ≤ V
VCC
≤ 3.6V with tripler, I
LOAD
= 1mA
to 50mA (circuit of Figure 12)
4.75 5.25
V
Reference Voltage (No Load) 1.267 1.291 V
Positive Current-Limit Threshold
(V
CS
- V
OUT
)
MAX1962, V
OUT
= 2V 45 56 mV
Negative Current-Limit Threshold
(V
OUT
- V
CS
)
MAX1962, V
OUT
= 2V 42 64 mV
CS Bias Current MAX1962, V
CS
= 3.3V 50 µA
OUT Bias Current MAX1961/MAX1962, V
OUT
= 3.3V 50 µA
Current-Limit Threshold (Positive
Direction, Fixed, V
PGND
- V
LX
)
MAX1960/MAX1961, ILIM = V
DD
58 90 mV
Current-Limit Threshold (Negative
Direction, Fixed, V
LX
- V
PGND
)
MAX1960/MAX1961, ILIM = V
DD
50 85 mV
MAX1960/MAX1961, R
ILIM
= 160kΩ 100 135
Current-Limit Threshold (Positive
Direction, Adjustable, V
PGND
- V
LX
)
R
ILIM
= 400kΩ 250 306
mV
MAX1960/MAX1961/MAX1962
2.35V to 5.5V, 0.5% Accurate, 1MHz PWM
Step-Down Controllers with Voltage Margining
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (continued)
(V
VCC
= 3.3V, Circuits of Figures 9–12, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER CONDITIONS MIN TYP MAX UNITS
MAX1960/MAX1961, R
ILIM
= 160kΩ 90 125
Current-Limit Threshold (Negative
Direction, Adjustable, V
LX
- V
PGND
)
R
ILIM
= 400kΩ 245 296
mV
DH Gate-Driver On-Resistance V
BST
- V
LX
= 5V, pulling up or down 3.5 Ω
DL Gate-Driver On-Resistance (Pullup) DL high state 3.5 Ω
DL Gate-Driver On-Resistance (Pulldown) DL low state 1.6 Ω
Minimum high time 200
FSET/SYNC Pulse Width
Minimum low time 200
ns
FSET/SYNC Rise/Fall Time 100 ns
CTL_, FSET/SYNC, EN Input High Voltage V
VCC
= 2.35V to 5.5V 2.0 V
CTL_, FSET/SYNC, EN Input Low Voltage V
VCC
= 2.35V to 5.5V 0.8 V
CTL_, FSET/SYNC, EN Input Current -1 +1 µA
CLKOUT V
OL
Sinking 1mA 0.1 V
CLKOUT V
OH
Sourcing 1mA
V
VCC
-
0.2V
V
CLKOUT Rise/Fall Time C
LOAD
= 100pF 40 ns
Note 1: Guaranteed by design.
Note 2: Specifications at -40°C are guaranteed by design, and not production tested.
MAX1960/MAX1961/MAX1962
2.35V to 5.5V, 0.5% Accurate, 1MHz PWM
Step-Down Controllers with Voltage Margining
6 _______________________________________________________________________________________
Typical Operating Characteristics
(Circuit of Figure 9, T
A
= +25°C, unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT WITH
15A 1MHz CIRCUIT, 3.3V INPUT
MAX1960 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
101
60
70
80
90
100
50
0.1 100
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.5V
EFFICIENCY vs. LOAD CURRENT WITH
15A 1MHz CIRCUIT, 5V INPUT
MAX1960 toc02
LOAD CURRENT (A)
EFFICIENCY (%)
101
60
70
80
90
100
50
0.1 100
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.5V
V
OUT
= 1.8V
EFFICIENCY vs. LOAD CURRENT WITH
15A 500kHz CIRCUIT, 3.3V INPUT
MAX1960 toc03
LOAD CURRENT (A)
EFFICIENCY (%)
101
60
70
80
90
100
50
0.1 100
V
OUT
= 2.5V
V
OUT
= 1.5V
V
OUT
= 1.8V
EFFICIENCY vs. LOAD CURRENT WITH
15A 500kHz CIRCUIT, 5V INPUT
MAX1960 toc04
LOAD CURRENT (A)
EFFICIENCY (%)
101
60
70
80
90
100
50
0.1 100
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.5V
V
OUT
= 1.8V
OUTPUT VOLTAGE
vs. INPUT VOLTAGE, 1MHz
MAX1960 toc05
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
5.14.74.33.93.53.1
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
2.7 5.5
3.3V OUTPUT
2.5V OUTPUT
1.8V OUTPUT
1.5V OUTPUT
1.2V OUTPUT
15A LOAD
DROPOUT
OUTPUT VOLTAGE
vs. INPUT VOLTAGE, 500kHz
MAX1960 toc06
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
5.14.74.33.93.53.1
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
2.7 5.5
3.3V OUTPUT
2.5V OUTPUT
1.8V OUTPUT
1.5V OUTPUT
1.2V OUTPUT
15A LOAD
DROPOUT
FB REGULATION VOLTAGE
vs. LOAD CURRENT
MAX1960 toc07
LOAD CURRENT (A)
FB VOLTAGE (V)
15105
0.798
0.799
0.800
0.801
0.802
0.803
0.797
020
FREQUENCY
vs. INPUT VOLTAGE
MAX1960 toc08
INPUT VOLTAGE (V)
FREQUENCY (kHz)
5.04.53.5 4.0
500
600
700
800
1000
900
1100
1200
400
3.0 5.5
FSET/SYNC = V
CC
FSET/SYNC = GND
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P29

MAX1960EEP+

Mfr. #:
Buy MAX1960EEP+
Manufacturer:
Maxim Integrated
Description:
Switching Controllers 1MHz PWM Step-Down
Lifecycle:
New from this manufacturer.
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