LTC3300-1 Datasheet, PDF (4/44 Pages) Linear Technology – High Effciency Bidirectional Multicell Battery Balancer

LTC3300-1
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
Cju3nc=ti1o0n.8teV,mCp2er=a7tu.r2eV,raCn1g=e,3o.6thV,erVw^{–i=se0sV,peucnilfeicsastoiothnesrawrieseatnToA}te=d.25°C. ^{(Note 2) BOOST+ = 25.2V, C6 = 21.6V, C5 = 18V, C4 = 14.4V,}
SYMBOL
I_{Q_EXTRA}
V_CELL|MIN
PARAMETER
CONDITIONS
MIN
Supply Current Extra
(Serial I/O in Current Mode)
Additional Current Measured at C6, V_MODE = V^–
(CSBI Logic Low, SCKI and SDI Both Logic High;
Refer to I_IL1, I_IH1, I_OH1, I_OL1 Specs)
Minimum Cell Voltage (Rising) Cn to Cn – 1 Voltage to Balance Cn, n = 2 to 6
Required for Primary Gate Drive C1 Voltage to Balance C1
l 1.8
l 1.8
Cn + 1 to Cn Voltage to Balance Cn, n = 1 to 5
l 1.8
BOOST⁺ to C6 Voltage to Balance C6, BOOST = V^– l 1.8
V_{CELL|MIN(HYST)} V_CELL|MIN Comparator Hysteresis
V_CELL|MAX
Maximum Cell Voltage (Rising)
Before Disabling Balancing
C1, Cn to Cn – 1 Voltage to Balance Any Cell,
n = 2 to 6
l 4.7
V_{CELL|MAX(HYST)} V_CELL|MAX Comparator Hysteresis
V_{CELL|RECONNECT} Maximum Cell Voltage (Falling) to
Re-Enable Balancing
l 4.25
V_REG
V_REG|POR
Regulator Pin Voltage
V_REG Voltage (Rising) for
Power-On Reset
9V ≤ C6 ≤ 36V, 0mA ≤ I_LOAD ≤ 20mA
l 4.4
TYP MAX UNITS
3.75
mA
2
2.2
V
2
2.2
V
2
2.2
V
2
2.2
V
70
mV
5
5.3
V
0.5
V
V
4.8
5.2
V
4.0
V
V_REG|MIN
Minimum V_REG Voltage (Falling) V_REG Voltage to Balance Cn, n = 1 to 6
l 3.8
V
for Secondary Gate Drive
I_{REG_SC}
Regulator Pin Short Circuit Current V_REG = 0V
Limit
55
mA
V_RTONP
V_RTONS
I_{WDT_RISING}
I_{WDT_FALLING}
V_{PEAK_P}
RTONP Servo Voltage
RTONS Servo Voltage
WDT Pin Current, Balancing
WDT Pin Current as a Percentage
of I_{WDT_RISING}, Secondary OV
Primary Winding Peak Current
Sense Voltage
R_RTONP = 20kΩ
R_RTONS = 15kΩ
R_TONS = 15kΩ, WDT = 0.5V
R_TONS = 15kΩ, WDT = 2V
I1P
InP to Cn – 1, n = 2 to 6
l 1.158
1.2 1.242
V
l 1.158
1.2 1.242
V
l
72
80
88
µA
l
85
87.5
90
%
l
45
50
55
mV
l
45
50
55
mV
V_{PEAK_S}
V_{PEAK_P} Matching (All 6)
Secondary Winding Peak Current
Sense Voltage
±[(Max – Min)/(Max + Min)] • 100%
I1S
InS to Cn – 1, n = 2 to 6, CTRL = 0 Only
l
±1.7
±5
%
l
45
50
55
mV
l
45
50
55
mV
V_{ZERO_P}
V_{PEAK_S} Matching (All 6)
Primary Winding Zero Current
Sense Voltage (Note 5)
±[(Max – Min)/(Max + Min)] • 100%
I1P
InP to Cn – 1, n = 2 to 6
l
±0.5
±3
%
l
–7
–2
3
mV
l
–7
–2
3
mV
V_{ZERO_P} Matching (All 6)
±{[(Max – Min)/2]/(V_{PEAK_P|MIDRANGE})} • 100%
l
Normalized to Mid-Range V_{PEAK_P} (Note 6)
±1.7
±5
%
V_{ZERO_S}
Secondary Winding Zero Current I1S
Sense Voltage (Note 5)
InS to Cn – 1, n = 2 to 6, CTRL = 0 Only
l –12
–7
–2
mV
l –12
–7
–2
mV
R_{BOOST_L}
R_{BOOST_H}
T_SD
V_{ZERO_S} Matching (All 6)
±{[(Max – Min)/2]/(V_{PEAK_S|MIDRANGE})} • 100%
l
Normalized to Mid-Range V_{PEAK_S} (Note 6)
BOOST^– Pin Pull-Down R_ON
Measured at 100mA Into Pin, BOOST = V_REG
BOOST^– Pin Pull-Up R_ON
Measured at 100mA Out of Pin, BOOST = V_REG
Thermal Shutdown Threshold
Rising Temperature
(Note 7)
±0.5
±3
%
2.5
Ω
4
Ω
155
°C
T_HYS
Thermal Shutdown Hysteresis
Timing Specifications
10
°C
t_{r_P}
Primary Winding Gate Drive Rise G1P Through G6P, C_GATE = 2500pF
Time (10% to 90%)
35
70
ns
t_{f_P}
Primary Winding Gate Drive Fall G1P Through G6P, C_GATE = 2500pF
Time (90% to 10%)
20
40
ns
33001f
4
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