MAX1887EEE Datasheet Download

Part No.:
MAX1887EEE
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Download Datasheet
Description:
[SMPS Controller ]
File Size:
1015 K
Page:
33 Pages
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Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
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Quick-PWM Slave Controllers for
Multiphase, Step-Down Supplies
MAX1887/MAX1897
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +30V
V
CC
, V
DD
to GND (Note 3) .......................................-0.3V to +6V
PGND to GND.....................................................................±0.3V
TRIG, LIMIT to GND .................................................-0.3V to +6V
SHDN
to GND (MAX1897)........................................-0.3V to +6V
ILIM, CM+, CM-, CS+, CS-, COMP
to GND....................................................-0.3V to (V
CC
+ 0.3V)
TON, POL to GND (MAX1897) ...................-0.3V to (V
CC
+ 0.3V)
DL to PGND................................................-0.3V to (V
DD
+ 0.3V)
BST to GND ............................................................-0.3V to +36V
DH to LX ....................................................-0.3V to (V
BST
+ 0.3V)
LX to BST..................................................................-6V to +0.3V
Continuous Power Dissipation (T
A
= +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW
20-Pin 5mm x 5mm QFN (derate 20.0mW/°C
above +70°C)..............................................................1.60W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V+ = 15V, V
CC
= V
DD
= 5V, V
OUT
= V
COMP
= 1.2V, V
CM+
= V
CM-
= V
CS+
= V
CS-
= 1.2V,
SHDN
= V
CC
(MAX1897),
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
PWM CONTROLLER
Input Voltage Range
Battery voltage, V+
V
CC
, V
DD
MAX1887 (300kHz), V+ = 12V, V
COMP
= 1.2V
TON = GND
MAX1897,
V+ = 12V,
V
COMP
= 1.2V
TON = open
TON = V
CC
4.0
4.5
320
171
320
464
355
190
355
515
75
Measured at V+; V
ILIM
> 0.35V
Measured at V
DD
; V
ILIM
> 0.35V
MAX1887
MAX1897
25
525
<1
525
<1
20
<1
20
<1
<1
<1
40
800
5
800
5
40
5
40
5
5
5
28.0
5.5
390
209
390
566
ns
µA
µA
µA
µA
µA
µA
µA
µA
µA
ns
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
On-Time (Note 1)
t
ON
Trigger Delay (Note 2)
SUPPLY CURRENTS
Quiescent Supply Current (V+)
Quiescent Supply Current (V
DD
)
(Note 3)
Quiescent Supply Current (V
CC
)
(MAX1897, Note 3)
Standby Supply Current (V+)
Standby Supply Current (V
DD
)
(Note 3)
Standby Supply Current (V
CC
)
(MAX1897, Note 3)
Shutdown Supply Current (V+)
(MAX1897)
Shutdown Supply Current (V
DD
)
(MAX1897, Note 3)
Shutdown Supply Current (V
CC
)
(MAX1897, Note 3)
t
TRIG
I+
I
DD
I
CC
Measured at V
CC
; V
ILIM
> 0.35V
Measured at V+; ILIM = GND
Measured at V
DD
; ILIM
= GND
MAX1887
MAX1897
Measured at V
CC
; ILIM = GND
Measured at V+; V
CC
= V
DD
= 0 or 5V,
SHDN
= GND
Measured at V
DD
;
SHDN
= GND
Measured at V
CC
;
SHDN
= GND
2
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