AAT3698 Datasheet, PDF (4/21 Pages) Skyworks Solutions Inc. – 1.6A Linear Li-Ion Battery Charger in a 3x3 TDFN Package

DATA SHEET
AAT3698
1.6A Linear Li-Ion Battery Charger in a 3x3 TDFN Package
Electrical Characteristics¹
V_IN = 5V, R_SET = 3.16kΩ, V_ENB = V_NOBAT = 0V, C_IN = 1μF, C_INCHR = 1μF, C_BAT = 1μF, C_LDOOUT = 1μF, TERM = ABI = IC = open,
T_A = -40 to +85°C, unless otherwise noted. Typical values are at T_A = 25°C.
Symbol Description
Operation
V_{IN_MAX} Input Over-Voltage Protection Range
V_IN
Normal Operating Input Voltage Range
I_OP
Operating Current
I_SD
Charge Function Shutdown Supply Current
I_{BAT_LEAK} Leakage Current from BAT Pin
Over-Voltage Protection
V_OVP
Over-Voltage Protection Trip Voltage
V_{OVP_HYS} Hysteresis
V_{IN_BAT_OS} V_IN – V_BAT Offset Voltage
V_{INCHR_DO} Drop Out Voltage Between IN and INCHR Pins
Battery Charger
V_UVLO Under-Voltage Lockout Threshold
V_{UVLO_HYS}
V_{CHG_DO}
Hysteresis
Drop Out Voltage Between INCHR and BAT
Pins
V_BOVP Battery Over-Voltage Protection Threshold
BAT Pin Voltage Regulation
V_CO(REG) Constant Regulated Output Voltage²
V_CO/V_CO Constant Output Voltage Tolerance
V_RCH
Battery Recharge Voltage Threshold
(AAT3698-1 only)
V_MIN
Preconditioning Voltage Threshold
Current Regulation
I_{CC_RANGE} Charge Current Programmable Range
I_{CH_CC} Constant-Current Mode Charge Current
V_ISET
ISET Pin Voltage
I_{CH_TRK%} Trickle Charge Current Ratio
K_ISET
Charge Current Set Factor: I_{CH_CC}/I_ISET
V_TERM
V_{EXTERM_DIS}
V_{EXTERM_EN}
I_TERM
TERM Pin Voltage Range
External Termination Disable Threshold³
External Termination Enable Threshold⁴
TERM Pin Output Current
I_{CH_TERM%} Charge Termination Threshold Current Ratio
Conditions
V_BAT = 4.3V, R_SET = 15.8kΩ
V_ENB = 5V, V_BAT = 4.3V
V_BAT = 4V, IN Pin Open
V_IN Rising Edge
V_IN Rising, V_BAT = 4V
V_IN Falling, V_BAT = 4V
V_IN = 5V, I_BAT = 500mA, R_SET = 1.58kΩ
V_IN Rising Edge
V_IN = 4.2V, I_BAT = 500mA, R_SET =
1.58kΩ
R_ISET = 31.6kΩ, I_BAT = 10mA
R_ISET = 31.6kΩ, I_BAT = 10mA, T_A= 25°C
R_ISET = 31.6kΩ, I_BAT = 10mA, T_A= -40
to +85°C
V_BAT falling
V_BAT rising
R_SET = 15.8kΩ, V_BAT = 3.6V
R_SET = 3.16kΩ, V_BAT = 3.6V
R_SET = 1.58kΩ, V_BAT = 3.6V
V_BAT = 3.6V
T_A = 25°C
T_A = -40 to +85°C
R_SET = 3.16kΩ, V_BAT = 2.0V
R_SET = 15.8kΩ, V_BAT = 3.6V
R_SET = 3.16kΩ, V_BAT = 3.6V
From off to full charge
V_IN = 5V, measured on TERM pin
V_IN = 5V, measured on TERM pin
V_TERM = 0.2V
V_TERM = 0.2V or tied to INCHR pin
Min
3.0
7.05
2.6
-0.5
-1
2.4
100
-15%
-10%
-10%
1.97
1.9
5
0
4.8
-10%
5
Typ
300
190
2
7.25
200
300
200
200
2.8
200
100
4.4
4.20
V_CO(REG)
- 0.1
2.6
100
500
1000
2
2
10
790
790
15
10
Max
28
7.0
450
250
5
7.45
3.0
+0.5
+1
2.8
1600
+15%
+10%
+10%
2.03
2.1
20
2.0
3.5
+10%
20
Units
V
V
μA
μA
μA
V
mV
mV
mV
V
mV
mV
V
V
%
V
mA
mA
V
V
% of
I_{CH_CC}
V
V
V
μA
% of
I_{CH_CC}
1. The AAT3698-1/-2 is guaranteed to meet performance specifications over the -40 to +85°C operating temperature range and is assured by design, characterization and cor-
relation with statistical process controls.
2. When no battery is connected, the BAT pin output voltage is regulated at 4.2V.
3. Internal Termination function is selected when VTREM > VEXTREM_DIS.
4. External Termination function is selected when VTREM < VEXTREM_EN.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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201902B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012