MAX8620YETD+T Maxim Integrated Products, MAX8620YETD+T Datasheet

IC UPMIC FOR MPU 14-TDFN

MAX8620YETD+T

Manufacturer Part Number
MAX8620YETD+T
Description
IC UPMIC FOR MPU 14-TDFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX8620YETD+T

Applications
Micro-Power Management Integrated Circuit (UPMIC), DSPs
Voltage - Input
2.7 ~ 5.5 V
Number Of Outputs
3
Voltage - Output
0.6 ~ 3.3 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
14-TDFN Exposed Pad
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 45 C
Output Current
500 mA
Output Voltage
0.6 V to 3.3 V
Supply Current
115 uA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX8620Y micro-power-management integrated
circuit (µPMIC) powers low-voltage microprocessors or
DSPs in portable devices. The µPMIC includes a high-
efficiency step-down DC-DC converter, two low-
dropout linear regulators (LDOs), a microprocessor
reset output, and power-on/off control logic. This device
maintains high efficiency at light loads with a low 115µA
supply current, and its miniature TDFN package makes
it ideal for portable devices.
The MAX8620Y’s step-down DC-DC converter utilizes a
proprietary 4MHz hysteretic-PWM control scheme that
allows for ultra-small external components. Internal syn-
chronous rectification improves efficiency and elimi-
nates the external Schottky diode that is required in
conventional step-down converters. The output voltage
is adjustable from 0.6V to 3.3V, with guaranteed output
current up to 500mA.
The MAX8620Y’s two LDOs offer low 45µV
noise and a low dropout of only 200mV at 200mA. Each
LDO delivers at least 300mA of continuous output cur-
rent. The output voltages are pin selectable from 1.8V
to 3.3V for flexibility.
A microprocessor reset output (RESET) monitors OUT1
and warns the system of impending power loss allow-
ing safe shutdown. RESET asserts during power-up,
power-down, shutdown, and fault conditions where
V
19-3564; Rev 0; 1/05
Pin Configuration appears at end of data sheet.
MSM is a trademark of QUALCOMM, Inc.
XScale is a trademark of Intel Corp.
ARM is a trademark of ARM Limited.
OMAP is a trademark of Texas Instruments, Inc.
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.
OUT1
Cellular Handsets
Smart Phones/PDA Phones
PDAs
Wireless LAN
Microprocessor and DSP Solutions including
MSM™, XScale™, ARM™, and OMAP™
is below its regulation voltage.
________________________________________________________________ Maxim Integrated Products
General Description
µPMIC for Microprocessors or DSPs
Applications
RMS
output
♦ Three Regulators and a Reset in One Package
♦ High-Efficiency Step-Down Converter
♦ Two 300mA LDO Regulators
♦ 30ms (min) RESET Output Flag
♦ 2.7V to 5.5V Input
♦ 115µA (typ) Supply Current at No Load
♦ Thermal-Overload Protection
♦ Tiny 3mm x 3mm x 0.8mm TDFN Package
MAX8620YETD
in Portable Equipment
PART
Up to 4MHz Fixed Switching Frequency
500mA Guaranteed Output Current
0.6V to 3.3V Adjustable Output Voltage
±2% Initial Accuracy
Fast Voltage-Positioning Transient Response
Internal Synchronous Rectifier
200mV Dropout at 200mA Load
Low 45µV
3% Accuracy over Line, Load, and Temperature
Overcurrent Protection
Nine Pin-Selectable Output-Voltage Settings
V
IN
*USE SEL1 AND SEL2 TO SET V
IN2
IN1
BP
EN2
HF_PWR
PWR_ON
SEL1
SEL2
Typical Operating Circuit
RMS
-40°C to +85°C
TEMP RANGE
MAX8620Y
GND
Output Noise
Ordering Information
RESET
OUT1
OUT2
LX
FB
OUT1
V
AND V
LOGIC
PIN-
PACKAGE
14 TDFN-EP
(T1433-2)
100kΩ
OUT2
1.80V, 2.60V, 2.80V, 2.85V,
3.00V, OR 3.30V*
300mA
1.80V, 2.50V, 2.60V,
2.85V, OR 3.00V*
300mA
RESET
Features
OUT3
0.6V TO 3.3V
500mA
MARK
TOP
AAB
1

Related parts for MAX8620YETD+T

MAX8620YETD+T Summary of contents

Page 1

... MSM is a trademark of QUALCOMM, Inc. XScale is a trademark of Intel Corp. ARM is a trademark of ARM Limited. OMAP is a trademark of Texas Instruments, Inc. ________________________________________________________________ Maxim Integrated Products 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. in Portable Equipment ♦ ...

Page 2

Microprocessors or DSPs in Portable Equipment ABSOLUTE MAXIMUM RATINGS IN1, IN2, PWR_ON, RESET, EN2, SEL1, SEL2, HF_PWR, FB GND ..................................-0.3V to +6.0V OUT1, OUT2 to GND .................................-0. Current ......................................................................1.5A Continuous Power Dissipation (T ...

Page 3

Microprocessors or DSPs ELECTRICAL CHARACTERISTICS (continued +3.7V 10µF, C IN1 IN2 IN BP (Note 1) PARAMETER SYMBOL OUT1, OUT2 Power-Supply Rejection Ratio Output Noise Voltage STEP-DOWN CONVERTER (OUT3) Output Voltage Range V ...

Page 4

Microprocessors or DSPs in Portable Equipment ( 3.7V, PWR_ON = IN1 2.2µH (LQH31CN2R2M53), C IN1 IN2 150kΩ 75kΩ), C = 10µ 0.01µ +25°C, unless ...

Page 5

Microprocessors or DSPs ( 3.7V, PWR_ON = IN1 2.2µH (LQH31CN2R2M53), C IN1 IN2 150kΩ 75kΩ), C = 10µ 0.01µ +25°C, unless otherwise noted.) A ...

Page 6

Microprocessors or DSPs in Portable Equipment ( 3.7V, PWR_ON = IN1 2.2µH (LQH31CN2R2M53), C IN1 IN2 150kΩ 75kΩ), C = 10µ 0.01µ +25°C, unless ...

Page 7

Microprocessors or DSPs PIN NAME LDO Output-Voltage Select Input 1. SEL1 and SEL2 set the OUT1 and OUT2 voltages to one of nine 1 SEL1 combinations (Table 1). LDO Output-Voltage Select Input 2. SEL1 and SEL2 set the ...

Page 8

Microprocessors or DSPs in Portable Equipment Detailed Description The MAX8620Y µPMIC is designed to power low-core- voltage microprocessors or DSPs in portable devices. The µPMIC contains a fixed-frequency, high-efficiency step-down converter; two low-dropout regulators (LDOs); a 30ms (min) ...

Page 9

Microprocessors or DSPs Voltage-Positioning Load Regulation As seen in Figure 2, the MAX8620Y uses a unique step- down converter feedback network. By taking feedback from the LX node through R1, the usual phase lag due to the output ...

Page 10

Microprocessors or DSPs in Portable Equipment IN1 MAX8620Y PWR_ON ON/OFF HF_PWR LOGIC EN2 LDO THERMAL SENSOR BP GND Figure 3. Linear-Regulator Functional Diagram LDO Output-Voltage Selection (SEL1, SEL2) As shown in Table 1, the LDO output voltages, OUT1 ...

Page 11

Microprocessors or DSPs Table 2. MAX8620Y Power Modes PWR_ON HF_PWR rising edge at HF_PWR initiates a 1.31s one-shot timer. The status of HF_PWR shown in Table 2 indicates whether the one-shot period ...

Page 12

Microprocessors or DSPs in Portable Equipment Reset Output ( RESET ) RESET is an open-drain, active-low output that indi- cates the status of OUT1. RESET is typically pulled up through a 100kΩ resistor to the system logic voltage. ...

Page 13

Microprocessors or DSPs If a long-key press is preferred, see must remain high until a microprocessor asserts a logic- high signal when using this circuit system includes multiple power-on sources, use a diode OR configura- tion, ...

Page 14

Microprocessors or DSPs in Portable Equipment Table 3. Suggested Inductors MANUFACTURER SERIES LB2012 LB2016 LB2518 Taiyo Yuden LBC2518 CB2012 CB2016 CB2518 LQH32C_53 Murata LQM43FN D310F TOKO D312C Sumida CDRH2D11 14 ______________________________________________________________________________________ INDUCTANCE ESR CURRENT RATING (µH) (Ω) 1.0 ...

Page 15

Microprocessors or DSPs Capacitor Selection Step-Down Converter Output Capacitor The output capacitor required to keep the OUT3 output voltage ripple small and to ensure regulation loop stability. C must have low impedance at the OUT3 ...

Page 16

Microprocessors or DSPs in Portable Equipment Connect GND to the ground plane. The external feed- back network should be very close to the FB pin, within 0.2in (5mm). Keep noisy traces, such as the LX node, as short ...

Page 17

Microprocessors or DSPs (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) D PIN 1 INDEX AREA -DRAWING NOT TO SCALE- ______________________________________________________________________________________ in Portable ...

Page 18

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 18 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products ...

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