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PDF MAX8660 Data sheet ( Hoja de datos )
| Número de pieza | MAX8660 | |
| Descripción | (MAX8660 / MAX8661) PMICs | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-0587; Rev 0; 8/06
High-Efficiency, Low-IQ, PMICs with Dynamic
Voltage Management for Mobile Applications
General Description
Features
The MAX8660/MAX8661 power management ICs
(PMICs) power Intel XScale® applications processors in
smart cellular phones, PDAs, Internet appliances, and
other portable devices.
Four step-down DC-DC outputs, three linear regulators,
and an 8th always-on LDO are integrated with power-
management functions. Two dynamically controlled DC-
DC outputs power the processor core and internal mem-
ory. Two other DC-DC converters power I/O, memory,
and other peripherals. Additional functions include on/off
control for outputs, low-battery detection, reset output,
and a 2-wire I2C† serial interface. The MAX8661 functions
the same as the MAX8660, except it lacks the REG1
step-down regulator and the REG7 linear regulator.
All step-down DC-to-DC outputs use fast 2MHz PWM
switching and tiny external components. They automati-
cally switch from PWM to high-efficiency light-load
operation to reduce operating current and extend bat-
tery life. In addition, a forced PWM option allows low-
noise operation at all loads. Overvoltage lockout pro-
tects the device against inputs up to 7.5V.
Applications
PDAs, Palmtops, and Wireless Handhelds
Smart Cell Phones
Personal Media Players
Portable GPS Navigation Digital Cameras
Pin Configuration
TOP VIEW
o Optimized for Intel XScale Processors
o Protected to 7.5V—Shutdown Above 6.3V
o Four Synchronous Step-Down Converters
REG1, REG2, REG3, REG4
o Four LDO Regulators
REG5, REG6, REG7, REG8
o 2MHz Switching Allows Small Components
o Low, 20µA Deep-Sleep Current
o Low-Battery Monitor and Reset Output
Ordering Information
PART
PIN-
PKG
PACKAGE CODE
OPTIONS
MAX8660ETL+
40 Thin QFN
5mm x 5mm
T4055-1
V1: 3.3V, 3.0V, 2.85V
V2: 3.3V, 2.5V, 1.8V
MAX8660AETL+*
40 Thin QFN
5mm x 5mm
T4055-1
V1: 2.5V, 2.0V, 1.8V
V2: 2.5V, 2.0V, 1.8V
MAX8661ETL+ 40 Thin QFN T4055-1 No REG1 and REG7
5mm x 5mm
V2: 3.3V, 2.5V, 1.8V
Note: All devices are specified over the -40°C to 85°C operating
temperature range.
+Denotes lead-free package.
*Future product—contact factory for availability.
Simplified Functional Diagram
30 29 28 27 26 25 24 23 22 21
EN34 31
20 V8
MAIN BATTERY
IN
V1
VCC_IO: (PIN PROG)
3.3V/3.0V/2.85V AT 1.2A
EN2 32
19 AGND
SRAD 33
18 IN
PG1 (GND) 34
LX1 (N.C.) 35
PV1 (PV) 36
EN1 (GND) 37
MAX8660AETL+
MAX8660ETL+
MAX8661ETL+
17 IN8
16 PG2
15 LX2
14 PV2
V1 (GND) 38
13 LBO
SET1 (GND) 39
V4 40
EXPOSED PAD (EP)
12 SDA
11 SCL
1 2 3 4 5 6 7 8 9 10
THIN QFN
5mm x 5mm x 0.8mm
( ) ARE FOR THE MAX8661
nBATT_FAULT
nRESET
I2C
INTERFACE
SYS_EN
PWR_EN
MAX8660
V2
LBR
LBF V3
LBO
V4
RSO
MR V5
SCL
V6
SDA
EN1,2,5 V7
EN34
V8
VCC_MEM: (PIN PROG)
1.8V/2.5V/3.3V AT 0.9A
VCC_APPS: (I2C PROG)
0.725 TO 1.8V, DVM AT 1.6A
VCC_SRAM: (I2C PROG)
0.725 TO 1.8V, DVM AT 0.4A
VCC_MVT: (I2C PROG)
1.7V TO 2.0V AT 200mA
VCC_CARD1: (I2C PROG)
1.8V TO 3.3V AT 500mA
VCC_CARD2: (I2C PROG)
1.8V TO 3.3V AT 500mA
VCC_BBATT:
3.3V ALWAYS ON AT 30mA
Intel XScale is a registered trademark of Intel Corp.
†Purchase of I2C components from Maxim Integrated products, Inc., or one of its sublicensed Associated Companies, conveys a
license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C
Standard Specification as defined by Philips.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
www.DataSheet4U.com
High-Efficiency, Low-IQ, PMICs with Dynamic
Voltage Management for Mobile Applications
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VIN5 = VIN67 = VIN8 = 3.6V, Figure 3, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
PWM Switching Frequency
fSW
REG1—SYNCHRONOUS STEP-DOWN DC-DC CONVERTER (MAX8660, MAX8660A only)
V1 Voltage
Accuracy—MAX8860
V1 Voltage
Accuracy—MAX8660A
V1 Load Regulation
V1 Line Regulation
SET1 = IN, VPV1 = 4.2V, load = 600mA
V1 SET1 not connected = VPV1 = 3.6V,
load = 600mA
SET1 = AGND, VPV1 = 3.6V, load = 600mA
SET1 = IN, VPV1 = 4.2V, load = 600mA
V1 SET1 not connected, VPV1 = 3.6V, 600mA
SET1 = AGND, 3.6V, load = 600mA
Load = 0 to 1200mA
SET1 Input Leakage Current
V1 Dropout Voltage
Load = 800mA (Notes 3, 4)
Load = 1200mA (Notes 3, 4)
p-Channel On-Resistance
n-Channel On-Resistance
p-Channel Current-Limit
Threshold
n-Channel Zero-Crossing
Threshold
n-Channel Negative Current Limit
REG1 Maximum Output Current
V1 Bias Current
LX1 Leakage Current
Soft-Start Ramp Rate—MAX8660
IOUT1
Forced-PWM mode only
2.6V ≤ VPV1 ≤ 6V (Note 5)
VPV1 = 6V, LX1 =
PG1 or PV1,
VEN1 = 0V
TA = +25°C
TA = +85°C
To V1 = 3.3V (total ramp time is 450µs for
all V1 output voltages)
Soft-Start Ramp Rate—
MAX8660A
To V1 = 2.5V (total ramp time is 450µs for
all V1 output voltages)
V5 to V1 Enable Time
tVMHVSH1 Figure 6
Internal Off-Discharge Resistance
Minimum Duty Cycle
Maximum Duty Cycle
Forced-PWM mode only, min duty cycle in
skip mode is 0%
MIN
1.9
3.250
2.955
2.807
2.463
1.970
1.773
1.5
1.2
-2
5
3
TYP
2.0
3.300
3.000
2.850
2.500
2.000
1.800
-1.5
0.15
0.01
150
200
0.12
0.15
1.8
25
-975
5
±0.03
±0.2
7
5
350
650
16.7
100
MAX
2.1
3.350
3.045
2.893
2.538
2.030
1.827
2.2
+2
9
7
UNITS
MHz
V
V
%/A
%/V
µA
mV
Ω
Ω
A
mA
mA
A
µA
µA
mV/µs
mV/µs
µs
Ω
%
%
_______________________________________________________________________________________ 5
5 Page 
www.DataSheet4U.com
High-Efficiency, Low-IQ, PMICs with Dynamic
Voltage Management for Mobile Applications
Typical Operating Characteristics
(Circuit of Figure 3, VIN = 3.6V, TA = +25°C, unless otherwise noted.)
100
90
80
70
60
50
40
30
20
10
0
2.5
QUIESCENT CURRENT
vs. INPUT VOLTAGE
SDA = SDL = V8
REG1–REG7 DISABLED
REG8 IS ALWAYS ON
3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
2.5
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
6.0
SWITCHING FREQUENCY
vs. TEMPERATURE
2.3
2.2
2.1
2.0
1.9
1.8
1.7
-40
-15 10 35 60
TEMPERATURE (°C)
85
EN1/EN2/EN5
EN1/EN2/EN5 ENABLE RESPONSE
MAX8660 toc04
5V/div
1V/div
V2
1V/div
V5
1V/div
V1
100µs/div
EN34
EN34 ENABLE RESPONSE
MAX8660 toc05
2V/div
500mV/div
V3
500mV/div
V4
RRAMP = 56kΩ
100µs/div
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX8660.PDF ] | |
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