MAX1638EAG+ Maxim Integrated Products, MAX1638EAG+ Datasheet - Page 2

• Manufacturer Part Number: MAX1638EAG+
• Description: IC STEP-DWN CTRLR HI-SPD 24-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1638EAG+

• Applications: Controller, Intel Pentium® II
• Voltage - Input: 4.5 ~ 5.5 V
• Number Of Outputs: 1
• Voltage - Output: 1.3 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SSOP
• Output Voltage: 1.3 V to 5.5 V
• Output Current: 35 A
• Input Voltage: 4.5 V to 5.5 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ABSOLUTE MAXIMUM RATINGS
V
PGND to AGND ..................................................................±0.3V
CSH, CSL to AGND ....................................-0.3V to (V
NDRV, PDRV, DL to PGND.........................-0.3V to (V
REF, CC1, CC2, LG, D0–D4, FREQ,
BST to PGND ............................................................-0.3V to 12V
BST to LX ....................................................................-0.3V to 6V
DH to LX.............................................(LX - 0.3V) to (BST + 0.3V)
High-Speed Step-Down Controller with
Synchronous Rectification for CPU Power
ELECTRICAL CHARACTERISTICS
(V
2
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DD
Output Voltage (FB) Accuracy
Input Voltage Range
Input Undervoltage Lockout
V
V
Reference Voltage
Reference Load Regulation
Reference Undervoltage Lockout
Reference Short-Circuit Current
AC Load Regulation
(Note 2)
DC Load Regulation
(Note 2)
PWROK Trip Level
PWROK Output Voltage Low
PWROK Output Current High
Switching Frequency
FB to AGND.............................................-0.3V to (V
DD
CC
DD
, V
_______________________________________________________________________________________
= V
Supply Current
Supply Current
CC
CC
, PWROK to AGND ......................................-0.3V to 6V
PARAMETER
= D4 = +5V, PGND = AGND = D0–D3 = 0V, FREQ = REF, T
Over line and load
(Note 1)
V
V
V
= 5.5V
V
regulation point, operating or standby mode
No load
0µA < I
Rising edge, 1% hysteresis
V
CSH - CSL =
0mV to 80mV
CSH - CSL =
0mV to 80mV
Rising FB, 1% hysteresis with respect to V
Falling FB, 1% hysteresis with respect to V
I
PWROK = 5.5V
FREQ = V
FREQ = REF
FREQ = AGND
SINK
CC
CC
CC
CC
REF
= V
rising edge, 1% hysteresis
= V
= V
= 0V
= 2mA, V
REF
DD
DD
DD
CC
< 100µA
= 5.5V, FB forced 200mV above
CC
DD
CC
CC
Operating
mode
Shutdown
mode
+ 0.3V)
+ 0.3V)
+ 0.3V)
= 4.5V
CONDITIONS
T
T
LG = GND
LG = REF
LG = V
LG = GND
LG = REF
LG = V
FB overdrive = 200mV
FB overdrive = 0V
DAC code = 11111
V
A
A
REF
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
= +25°C to +85°C
= 0°C to +85°C
QSOP (derate 8.70mW/°C above +70°C) .....................696mW
SSOP (derate 8.00mW/°C above +70°C) .....................640mW
A
= 0V
CC
CC
QSOP
SSOP θ
= 0°C to +85°C, unless otherwise noted.)
REF
θ
REF
JC
JC
..................................................................40°C/W
..................................................................45°C/W
3.465
MIN
-7.5
850
540
255
4.5
4.0
2.7
0.5
6.5
A
= +70°C)
1000
TYP
0.05
600
300
3.6
3.5
0.5
0.1
0.2
-6
5
1
2
8
3.535
MAX
1150
±1.5
-4.5
660
345
5.5
4.2
2.5
0.3
0.1
3.0
4.0
9.5
0.4
±1
10
10
1
UNITS
kHz
mA
mA
mV
mA
µA
%
%
%
%
V
V
V
V
V