MAX1864TEEE+ Maxim Integrated Products, MAX1864TEEE+ Datasheet - Page 6

• Manufacturer Part Number: MAX1864TEEE+
• Description: IC PWR SUPPLY CONTROLLER 16QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1864TEEE+

• Applications: Power Supply Controller
• Voltage - Input: 4.5 ~ 28 V
• Current - Supply: 1mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

xDSL/Cable Modem Triple/Quintuple Output
Power Supplies
6
(Circuit of Figure 1, V
3.35V
3.30V
5.05
5.03
5.01
4.99
4.97
4.95
1.5A
0.5A
10V
_______________________________________________________________________________________
1A
0
0
A. V
B. INDUCTOR CURRENT, 500mA/div
C. V
V
IN
OUPUT VOLTAGE vs. LOAD CURRENT
= 12V
OUT
LX
, 10V/div
0.5
= 3.3V (PRESET), I
(STEP-DOWN CONVERTER)
SWITCHING WAVEFORMS
(ADJUSTABLE MODE)
LOAD CURRENT (mA)
1.0
IN
2μs/div
1.5
= 12V, V
OUT
= 1A, 50mV/div
2.0
OUT
MAX1864/65 toc07
2.5
= 3.3V, T
3.0
C
A
B
A
= +25°C, unless otherwise noted.)
5.05
5.03
5.01
4.99
4.97
4.95
Typical Operating Characteristics (continued)
2V
5V
4V
1A
0
0
0
0
A. V
B. V
C. INDUCTOR CURRENT, 1A/div
V
IN
INTERNAL 5V LINEAR REGULATOR
= 0 TO 12V
L
OUT
, 5V/div
5
= 3.3V (PRESET), 2V/div
vs. LOAD CURRENT
LOAD CURRENT (mA)
10
SOFT-START
1ms/div
15
20
MAX1864/65 toc08
25
30
C
A
B
3.3V
3.5V
3.1V
40
35
30
25
20
15
10
1A
5
0
0
DRIVE CURRENT vs. BASE-DRIVE VOLTAGE
0
A. V
B. I
V
POSITIVE LINEAR REGULATOR BASE-
IN
OUT
= 12V
OUT
= 10mA TO 1A, 500mA/div
= 3.3V (PRESET), 200mV/div
(STEP-DOWN CONVERTER)
2
LOAD TRANSIENT
BASE VOLTAGE (V)
V
FB_
4
1ms/div
V
= 1.0V
FB_
= 0.96V
6
(MAX1865) ONLY
B2, B3 AND B4
REF
MAX1864/65 toc06
8
10
A
B