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MAX1712EEG

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28
MAX1710/MAX1711/MAX1712
High-Speed, Digitally Adjusted
Step-Down Controllers for Notebook CPUs
4 _______________________________________________________________________________________
%10 15
V
BATT
= 4.5V to 28V, for all
D/A codes, includes load
regulation error
V
CC,
V
DD
Battery voltage, V+
Measured at V
CC
, FB forced above the regulation point
Overvoltage Trip Threshold
(Note 2)
V
BATT
= 24V,
FB = 2V
(Note 2)
With respect to unloaded output voltage (MAX1710) %
CONDITIONS
65 75
Output Undervoltage
Protection Threshold
µA950Quiescent Supply Current (V
CC
)
ns500Minimum Off-Time
380 470
260 320
175 225
%-1.5 1.5
DC Output Voltage Accuracy
TON = REF (400kHz)
4.5 5.5
V
228
Input Voltage Range
TON = GND (550kHz)
ns
140 180
On-Time
TON = open (300kHz)
UNITMIN TYP MAXPARAMETER
V
CC
= 4.5V to 5.5V, no external REF load V1.98 2.02Reference Voltage
TON = V
CC
(200kHz)
LX to PGND, ILIM tied to V
CC
mV85 115
Current-Limit Threshold
(Positive Direction, Fixed)
LX to PGND mV
35 65
Current-Limit Threshold
(Positive Direction, Adjustable)
R
LIM
= 100kΩ
R
LIM
= 400kΩ 160 240
Rising edge, hysteresis = 20mV, PWM disabled below
this level
4.1 4.4
V
CC
Undervoltage Lockout
Threshold
V
D0–D4, SHDN, SKIP, OVP
V2.4Logic Input High Voltage
D0–D4, SHDN, SKIP, OVP
V0.8Logic Input Low Voltage
SHDN, SKIP, OVP
µA-1 1Logic Input Current
D0–D4, each forced to GND µA310Logic Input Pullup Current
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
BATT
= 15V, V
CC
= V
DD
= 5V, SKIP = GND, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 3)
V2.20 2.30
0.75 0.85 V
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
BATT
= 15V, V
CC
= V
DD
= 5V, SKIP = GND, T
A
= 0°C to +85°C, unless otherwise noted.)
CONDITIONS
TON logic input high level VV
CC
- 0.4TON V
CC
Level
TON logic input upper-midrange level V3.15 3.85TON Float Voltage
TON logic input lower-midrange level V1.65 2.35TON Reference Level
TON logic input low level V0.5TON GND Level
TON only, forced to GND or V
CC
µA-3 3TON Logic Input Current
UNITMIN TYP MAXPARAMETER
With respect to unloaded output voltage (MAX1710)
(MAX1711/MAX1712)
(MAX1711/MAX1712)
%-1.7 1.7
DAC codes from 1.32V to 2V
DAC codes from 0.925V to
1.275V
MAX1710/MAX1711/MAX1712
High-Speed, Digitally Adjusted
Step-Down Controllers for Notebook CPUs
_______________________________________________________________________________________ 5
40
60
50
80
70
90
100
0.01 0.1 1 10
EFFICIENCY vs. LOAD CURRENT
(V
O
= 2.0V, f = 300kHz)
MAX1710-01
LOAD CURRENT (A)
EFFICIENCY (%)
V
IN
= 4.5V
V
IN
= 7V
V
IN
= 15V
V
IN
= 24V
40
60
50
80
70
90
100
0.01 0.1 1 10
EFFICIENCY vs. LOAD CURRENT
(V
O
= 1.6V, f = 300kHz)
MAX1710-02
LOAD CURRENT (A)
EFFICIENCY (%)
V
IN
= 4.5V
V
IN
= 24V
V
IN
= 7V
V
IN
= 15V
40
60
50
80
70
90
100
0.01 0.1 1 10
EFFICIENCY vs. LOAD CURRENT
(V
O
= 1.3V, f = 300kHz)
MAX1710-03
LOAD CURRENT (A)
EFFICIENCY (%)
V
IN
= 4.5V
V
IN
= 24V
V
IN
= 15V
V
IN
= 7V
40
60
50
80
70
90
100
0.01 0.1 1 10
EFFICIENCY vs. LOAD CURRENT
(V
O
= 1.6V, f = 550kHz)
MAX1710-04
LOAD CURRENT (A)
EFFICIENCY (%)
V
IN
= 4.5V
V
IN
= 15V
V
IN
= 7V
V
IN
= 24V
0
100
50
200
150
300
250
350
0.01 0.1 1 10
FREQUENCY vs. LOAD CURRENT
(V
O
= 1.6V)
MAX1710-05
LOAD CURRENT (A)
FREQUENCY (kHz)
V
IN
= 15V, PWM MODE
V
IN
= 4.5V, SKIP MODE
V
IN
= 15V, SKIP MODE
TON = OPEN
300
306
304
302
308
310
312
314
316
318
320
0105 15202530
FREQUENCY vs. INPUT VOLTAGE
(I
O
= 7A)
MAX1710-06
INPUT VOLTAGE (V)
FREQUENCY (kHz)
V
O
= 2.0V
V
O
= 1.6V
TON = OPEN
Note 2: On-Time and Off-Time specifications are measured from 50% point to 50% point at the DH pin with LX forced to 0V, BST
forced to 5V, and a 250pF capacitor connected from DH to LX. Actual in-circuit times may differ due to MOSFET switching
speeds.
Note 3: Specifications from -40°C to 0°C are guaranteed but not production tested.
__________________________________________Typical Operating Characteristics
(7A CPU supply circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
CONDITIONS
Measured at FB with respect to unloaded output voltage,
falling edge, hysteresis = 1%
%-8.5 -2.5PGOOD Trip Threshold
I
SINK
= 1mA V0.4PGOOD Output Low Voltage
High state, forced to 5.5V µA1PGOOD Leakage Current
UNITMIN TYP MAXPARAMETER
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
BATT
= 15V, V
CC
= V
DD
= 5V, SKIP = GND, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 3)
MAX1710/MAX1711/MAX1712
High-Speed, Digitally Adjusted
Step-Down Controllers for Notebook CPUs
6 _______________________________________________________________________________________
_____________________________Typical Operating Characteristics (continued)
(7A CPU supply circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
0
0.2
0.1
0.5
0.4
0.3
0.8
0.7
0.6
0.9
0105 15202530
CONTINUOUS TO DISCONTINUOUS
INDUCTOR CURRENT POINT
vs. INPUT VOLTAGE
MAX1710-10
INPUT VOLTAGE (V)
LOAD CURRENT (A)
V
O
= 2.0V
V
O
= 1.6V
V
O
= 1.3V
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
0105 15202530
INDUCTOR CURRENT PEAKS AND
VALLEYS vs. INPUT VOLTAGE
(AT CURRENT-LIMIT POINT)
MAX1710-11
INPUT VOLTAGE (V)
INDUCTOR CURRENT (A)
I
PEAK
I
VALLEY
0
0.2
0.1
0.4
0.3
0.6
0.5
0.7
05 15 2510 20 30
NO-LOAD SUPPLY CURRENTS
vs. INPUT VOLTAGE
(SKIP MODE, f = 300kHz)
MAX1710-12
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
I
CC
I
BATT
I
DD
0
0.2
0.1
0.4
0.3
0.6
0.5
0.7
0 10203051525
NO-LOAD SUPPLY CURRENTS
vs. INPUT VOLTAGE
(SKIP MODE, f = 550kHz)
MAX1710-13
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
I
CC
I
BATT
I
DD
0
6
4
2
8
10
12
14
16
18
20
0105 15202530
NO-LOAD SUPPLY CURRENTS
vs. INPUT VOLTAGE
(PWM MODE, f = 550kHz)
MAX1710-15
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
I
DD
I
BAT
I
CC
285
290
295
300
305
310
315
-60 -20-40 0 20 40 60 80 100
FREQUENCY vs. TEMPERATURE
(V
IN
= 15V, V
O
= 2.0V)
MAX1710-07
TEMPERATURE (°C)
FREQUENCY (kHz)
I
O
= 7A
I
O
= 4A
I
O
= 1A
TON = OPEN
456
460
458
466
464
462
472
470
468
474
-60 0 20-40 -20 40 60 80 100
ON-TIME vs. TEMPERATURE
MAX1710-08
TEMPERATURE (°C)
ON-TIME (ns)
I
O
= 1A
I
O
= 4A OR 7A
0
5
10
15
20
25
30
-60 -20-40 0 20406080100
CURRENT-LIMIT TRIP POINT
vs. TEMPERATURE
MAX1710-09
TEMPERATURE (°C)
CURRENT TRIP POINT (A)
I
LIM
= 400kΩ
I
LIM
= V
CC
I
LIM
= 100kΩ
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28

MAX1712EEG

Mfr. #:
Buy MAX1712EEG
Manufacturer:
Maxim Integrated
Description:
LDO Voltage Controllers High-Speed, Digitally Adjusted Step-Down Controllers for Notebook CPUs
Lifecycle:
New from this manufacturer.
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