MAX1887EEE Maxim Integrated Products, MAX1887EEE Datasheet - Page 6

• Manufacturer Part Number: MAX1887EEE
• Description: Current Mode PWM Controllers
• Manufacturer: Maxim Integrated Products

Specifications of MAX1887EEE

• Number Of Outputs: 1
• Mounting Style: SMD/SMT
• Package / Case: QSOP-16
• Switching Frequency: 550 KHz
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Synchronous Pin: No
• Topology: Boost

Quick-PWM Slave Controllers for
Multiphase, Step-Down Supplies
(Circuit of Figure 1, V+ = 12V, V
6
100
_______________________________________________________________________________________
1.00
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
90
80
70
60
50
40
30
20
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.1
0
0
OUTPUT VOLTAGE vs. LOAD CURRENT
V
(V
EFFICIENCY vs. LOAD CURRENT
INDUCTOR CURRENT BALANCE
IN
OUT
= 5V
5
V
10
IN
= 1.0V, V
vs. INPUT VOLTAGE
= 8V
LOAD CURRENT (A)
INPUT VOLTAGE (V)
1
(V
TWO-PHASE
TWO-PHASE
I
10
OUT
OUT
V
IN
= NO LOAD
20
= 1.3V)
OFFSET
I
V
= 20V
OUT
IN
= 12V
15
= 40A
10
= -10mV)
CC
V
30
IN
20
= 12.0V
= V
DD
100
40
25
= 5V, V
1.30
1.29
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.20
-25
-50
OUT
50
25
80
70
60
50
40
30
20
10
0
CURRENT-SENSE COMMON-MODE VOLTAGE
0
-0.5
0
0
OUTPUT VOLTAGE vs. LOAD CURRENT
OUT = CM+ = CM- = CS+ = CS-
= 1.3V (ZMODE = GND) and 1V (ZMODE = V
MASTER AND SLAVE
OFFSET VOLTAGE DEVIATION vs.
(V
OUT
5
10
NO-LOAD INPUT CURRENT
0
= 1.3V, V
vs. INPUT VOLTAGE
LOAD CURRENT (A)
INPUT VOLTAGE (V)
10
TWO-PHASE
0.5
20
V
I
OUT
BIAS
15
OFFSET
(V)
= I
Typical Operating Characteristics
1.0
I
30
IN
DD
+ I
20
= -10mV)
V
CC
IN
= 12.0V
1.5
40
25
50
2.0
30
100
-0.1
-0.2
-0.3
0.3
0.2
0.1
90
80
70
60
50
40
30
20
1.0
0.8
0.6
0.4
0.2
0
0
0.1
0
0
CC
OUT = CM+ = CM- = CS+ = CS-
EFFICIENCY vs. LOAD CURRENT
V
), SHDN = V
INDUCTOR CURRENT BALANCE
OFFSET VOLTAGE DEVIATION
vs. COMPENSATION VOLTAGE
IN
= 5V
10
V
0.5
IN
vs. LOAD CURRENT
= 8V
LOAD CURRENT (A)
LOAD CURRENT (A)
1
TWO-PHASE
(V
20
V
OUT
COMP
V
IN
1.0
CC
V
= 1V)
= 20V
IN
(V)
30
= 12V
(MAX1897))
10
1.5
40
100
2.0
50