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RT9527 Datasheet(PDF) 5 Page - Richtek Technology Corporation

Part # RT9527
Description  Single Cell Li-Ion Battery Charger with Adjustable Charging Current for Portable Applications
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9527 Datasheet(HTML) 5 Page - Richtek Technology Corporation

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RT9527
5
DS9527-00 May 2012
www.richtek.com
©
Copyright
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Pre-Charge Current Factor
KCHG_P
ICHG_P = KCHG_P / RISET
30
60
90
A
Ω
Pre-Charge
BAT Pre-Charge Threshold
VPRECH
VBAT Falling
2.7
2.8
2.9
V
BAT Pre-Charge Threshold
Hysteresis
ΔVPRECH
--
200
--
mV
Charge Termination
Termination Current Ratio
ITERMI
VBAT > VPREC, ICHG < ITERMI,
CHG = L to H
5
10
15
%
Protection
Thermal Regulation
TREG
--
125
--
°C
Over Voltage Protection
VOVP
6.2
6.5
6.8
V
Over Voltage Protect Hysteresis
ΔVOVP
--
0.2
--
V
ISET Pin Short Protection
RSHORT
375
500
625
Ω
NTC
Cold Temperature Fault
Threshold Voltage
VCOLD
Rising Threshold
60
61
62
%VIN
Cold Temperature Fault
Threshold Hysteresis
ΔVCOLD
--
2
--
%VIN
Hot Temperature Fault Threshold
Voltage
VHOT
Falling Threshold
29
30
31
%VIN
Hot Temperature Fault Threshold
Hysteresis
ΔV
HOT
--
2
--
%VIN
Timer
Pre-Charge Fault Time
tPCHG
CTIMER = 1μF (1 / 8 x tFCHG)
1440
1800
2160
s
Fast-Charge Fault Time
tFCHG
CTIMER = 1μF
11520 14400
17280
s
Other
PGOOD Pull Down Voltage
VPGOOD
IPGOOD = 5mA
--
200
--
mV
CHG Pull Down Voltage
VCHG
ICHG = 5mA
--
200
--
mV
PGOOD Deglitch Time
tPGOOD
Time measured from the edge
VIN = 0V to 5V in 1μs to PGOOD = L
--
2
--
ms
Input Over Voltage Blanking Time tOVP
--
50
--
μs
Input Over Voltage Recovery
Time
tOVP_R
--
2
--
ms
Pre-Charge to Fast-Charge
Deglitch Time
tPF
--
25
--
ms
Fast-charge to Pre-Charge
Deglitch Time
tFP
--
25
--
ms
Termination Deglitch Time
tTERMI
--
25
--
ms
Recharge Deglitch Time
tRECHG
--
100
--
ms
Sleep Deglitch Time
tNO-IN
--
25
--
ms
Pack Temperature Fault
Detection Deglitch Time
tTS
--
25
--
ms


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