MAX1544ETL+ Maxim Integrated Products, MAX1544ETL+ Datasheet - Page 4

• Manufacturer Part Number: MAX1544ETL+
• Description: IC QUICK-PWM DUAL-PHASE 40-TQFN
• Manufacturer: Maxim Integrated Products
• Series: Quick-PWM™r

Specifications of MAX1544ETL+

• Applications: Controller, AMD Hammer
• Voltage - Input: 2 ~ 28 V
• Number Of Outputs: 1
• Voltage - Output: 0.68 ~ 1.55 V
• Operating Temperature: -40°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 40-TQFN Exposed Pad
• Output Voltage: 0.675 V to 1.55 V
• Output Current: 40 A
• Input Voltage: 4 V to 28 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Dual-Phase, Quick-PWM Controller for
AMD Hammer CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, V
1.3V, OFS = SUS = GNDS = D0–D4 = GND; T
4
Output Undervoltage Fault and
VROK Transition Blanking Time
(Note 4)
VROK Startup Delay
VROK Delay
VROK Output Low Voltage
VROK Leakage Current
V
Threshold
Thermal-Shutdown Threshold
CURRENT LIMIT AND BALANCE
Current-Limit Threshold Voltage
(Positive, Default)
Current-Limit Threshold Voltage
(Positive, Adjustable)
Current-Limit Threshold Voltage
(Negative)
Current-Limit Threshold Voltage
(Zero Crossing)
CMP, CMN, CSP, CSN Input
Ranges
CMP, CMN, CSP, CSN Input
Current
Secondary Driver-Disable
Threshold
ILIM Input Current
Current-Limit Default Switchover
Threshold
Current-Balance Offset
CC
_______________________________________________________________________________________
Undervoltage Lockout
PARAMETER
CC
= V
V
V
V
SYMBOL
UVLO(VCC)
LIMIT(NEG)
DD
OS(IBAL)
t
V
T
V
V
t
BLANK
V
V
I
VROK
SHDN
ZERO
LIMIT
LIMIT
ILIM
CSP
ILIM
= V
SHDN
A
= 0°C to +85°C, unless otherwise specified. Typical values are at T
Measured from the time when FB reaches
the voltage set by the DAC code; clock
speed set by R
Measured from the time when FB first
reaches the voltage set by the DAC code
after startup
FB forced 2% outside the VROK trip
threshold
I
High state, VROK forced to 5.5V
Rising edge, hysteresis = 90mV, PWM
disabled below this level
Hysteresis = 10°C
CMP - CMN, CSP - CSN; ILIM = V
CMP - CMN, CSP - CSN
CMP - CMN, CSP - CSN; ILIM = V
SKIP = V
CMP - CMN, CSP - CSN; SKIP = GND
V
V
(V
-20mV < (V
1.0V < V
SINK
= V
CSP
ILIM
CMP
TON
= 3mA
= V
= 0 to 5V
- V
CCI
CC
= V
CSN
CMN
CMP
< 2.0V
SKIP
= 0 to 5V
) - (V
CONDITIONS
TIME
- V
= V
CSP
CMN
S0
- V
) < 20mV,
= V
CSN
V
V
S1
ILIM
ILIM
); I
= V
= 0.2V
= 1.5V
CCI
CC
CC
OVP
,
= 0,
= 5V, V
FB
MIN
-41
4.0
28
73
-2
-2
8
0
3
3
= V
3
CMP
V
V
CC
CC
TYP
4.25
160
= V
-36
1.5
0.1
24
10
30
10
75
5
- 1
- 1
CMN
A
V
V
= V
MAX
= +25°C.)
200
-31
0.4
4.4
+2
CC
0.4
CC
0.4
+2
32
12
77
7
1
2
CSP
-
-
= V
UNITS
Clks
mV
mV
mV
mV
mV
ms
µA
°C
µA
nA
µs
CSN
V
V
V
V
V
=