SP6649EU SIPEX [Sipex Corporation], SP6649EU Datasheet

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SP6649EU

Manufacturer Part Number
SP6649EU
Description
Ultra-low Quiescent Current, High Efficiency Boost DC-DC Regulator
Manufacturer
SIPEX [Sipex Corporation]
Datasheet
FEATURES
DESCRIPTION
The SP6649 is an ultra-low quiescent current, high efficiency step-up DC-DC converter ideal for
single and dual cell alkaline, or Li-Ion battery applications such as digital still cameras, PDA’s,
MP3 players, and other portable devices. The SP6649 combines the high delivery associated
with PWM control, and the low quiescent current and excellent light-load efficiency of PFM control.
The SP6649 features 12µA quiescent current, synchronous rectification, a 0.3 charging switch,
anti-ringing inductor switch, programmable low battery detect, under-voltage lockout and
programmable inductor peak current. The device can be controlled by a 1nA active LOW
shutdown pin.
Figure 1. Typical Application Circuit
Rev:001 Date:11/20/03
VBATT
Ultra-low 12µA Quiescent Current
700mA Output Current at 2.6V
94% Efficiency Possible
Wide Input Voltage Range: 0.85V to 4.5V
3.3V Fixed Output and adjustable 2.5V to
Internal Synchronous Rectifier for High
0.3 Charging Switch, 0.3 Synchro-
Anti-Ringing Inductor Switch
Programmable Inductor Peak Current
Logic Shutdown Control
Under Voltage Lock-Out, 0.62V
Programmable Low Battery Detect
Small 10 pin MSOP Package
C1 = C2 = Kemet T49C476K010AS, L1 = Sumida CDRH5D28-100
R1 = 374K for 5V
5.0V Output Range
Efficiency
nous Rectifier
+
47uF
C1
SHDN
RLIM
1.87K
LBON
LBI
OUT
1
2
3
4
5
VBATT
LBI
LBON
RLIM
SHDN
L1 10uH
SP6649
SP6649 Ultra-low Quiescent Current, High Efficiency Boost DC-DC Regulator
®
PGND
VOUT
GND
FB
LX
10
9
8
7
6
High Efficiency Boost DC-DC Regulator
C4
1uF
205K
R1
R2
124K
IN,
47pF
3.3V
C3
3.3Vout
+
47uF
OUT
C2
Ultra-low Quiescent Current,
1
Figure 2. Maximum Load Current in Operation
APPLICATIONS
V
SHDN
LBON
Digital Still Cameras
MP3 Players
PDA's
Pagers
Handheld Portable Devices
Medical Monitors
BATT
R
LBI
LIM
1
2
3
4
5
10 pin MSOP
Tja=113°C/W
Top View
TBD
© Copyright 2002 Sipex Corporation
SP6649
10
9
8
7
6
V
LX
P
GND
FB
OUT
GND

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SP6649EU Summary of contents

Page 1

High Efficiency Boost DC-DC Regulator FEATURES Ultra-low 12µA Quiescent Current 700mA Output Current at 2.6V 94% Efficiency Possible Wide Input Voltage Range: 0.85V to 4.5V 3.3V Fixed Output and adjustable 2.5V to 5.0V Output Range Internal Synchronous Rectifier for ...

Page 2

ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions ...

Page 3

PIN DESCRIPTION PIN NUMBER PIN NAME 1 V BATT 2 LBI 3 LBON 4 R LIM 5 SHDN GND 8 P GND OUT Rev:001 Date:11/20/03 SP6649 Ultra-low Quiescent Current, High Efficiency Boost DC-DC ...

Page 4

BLOCK DIAGRAM VBATT VO INTERNAL VBATT Vbatt - c SHDN SDI 0.61V + n Ref IBIAS 1.25V SDI Block 0.61V + current current control reference Ipkset Rlim LBI - c 0.61V + THEORY OF OPERATION Detailed Desctiption: ...

Page 5

At light loads (plot A in Figure 3) the charge cycle will take t µs. For a 1V battery this ON, MAX would be 3.3Vµ 3.3µs ON, MAX ON BATT The ...

Page 6

PERFORMANCE CHARACTERISTICS 3.3V out, refer to the Circuit in Figure 1, T 100 0.1 1.0 10.0 100.0 Iload (mA) Figure 4. Efficiency vs. Load Current 100 1.0 ...

Page 7

PERFORMANCE CHARACTERISTICS 5V out, refer to the Circuit in Figure 1, T 100 0.1 1.0 10.0 100.0 Iload (mA) Figure 10. SP6649 5V Efficiency vs. Load Current 300 250 200 150 100 ...

Page 8

Pin #1 indentifier must be indicated within this shaded area (D/2 * E1/2) 10-PIN MSOP Dimensions in (mm) JEDEC MO-187 (BA) Variation MIN NOM MAX 0.75 ...

Page 9

... Part Number SP6649EU .................................................. -40°C to +85°C ........................................................ 10 Pin MSOP SP6649EU/TR ............................................ -40°C to +85°C ................................ (Tape & Reel) 10 Pin MSOP Corporation SIGNAL PROCESSING EXCELLENCE Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Sales Office ...

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