LTC3300-2_15 Datasheet, PDF (4/42 Pages) Linear Technology – Addressable High Efficiency Bidirectional Multicell Battery Balancer

LTC3300-2
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range,
C3 = 10.8V, C2 = 7.2V, C1 =
otherwise
3.6V, V^– =
specifications are at T_A = 25°C.
0V, unless otherwise noted.
(Note
2)
BOOST⁺
=
25.2V,
C6
=
21.6V,
C5
=
18V,
C4
=
14.4V,
SYMBOL
PARAMETER
CONDITIONS
I_{REG_SC}
Regulator Pin Short Circuit Current V_REG = 0V
Limit
V_RTONP
RTONP Servo Voltage
R_RTONP = 20kΩ
l
V_RTONS
RTONS Servo Voltage
R_RTONS = 15kΩ
l
I_{WDT_RISING}
WDT Pin Current, Balancing
R_TONS = 15kΩ, WDT = 0.5V
l
I_{WDT_FALLING} WDT Pin Current as a Percentage R_TONS = 15kΩ, WDT = 2V
l
of I_{WDT_RISING}, Secondary OV
V_{PEAK_P}
Primary Winding Peak Current I1P
l
Sense Voltage
InP to Cn – 1, n = 2 to 6
l
V_{PEAK_P} Matching (All 6)
±[(Max – Min)/(Max + Min)] • 100%
l
V_{PEAK_S}
Secondary Winding Peak Current I1S
l
Sense Voltage
InS to Cn – 1, n = 2 to 6, CTRL = 0 Only
l
V_{PEAK_S} Matching (All 6)
±[(Max – Min)/(Max + Min)] • 100%
l
V_{ZERO_P}
Primary Winding Zero Current
I1P
l
Sense Voltage (Note 5)
InP to Cn – 1, n = 2 to 6
l
V_{ZERO_S}
V_{ZERO_P} Matching (All 6)
±{[(Max – Min)/2]/(V_{PEAK_P|MIDRANGE})} • 100%
l
Normalized to Mid-Range V_{PEAK_P} (Note 6)
Secondary Winding Zero Current I1S
l
Sense Voltage (Note 5)
InS to Cn – 1, n = 2 to 6, CTRL = 0 Only
l
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)
T_HYS
Thermal Shutdown Hysteresis
Timing Specifications
t_{r_P}
Primary Winding Gate Drive Rise G1P Through G6P, C_GATE = 2500pF
Time (10% to 90%)
t_{f_P}
Primary Winding Gate Drive Fall G1P Through G6P, C_GATE = 2500pF
Time (90% to 10%)
t_{r_S}
t_{f_S}
t_ONP|MAX
Secondary Winding Gate Drive
Rise Time (10% to 90%)
G1S, C_GATE = 2500pF
G2S Through G6S, CTRL = 0 Only, C_GATE = 2500pF
Secondary Winding Gate Drive Fall G1S, C_GATE = 2500pF
Time (90% to 10%)
G2S Through G6S, CTRL = 0 Only, C_GATE = 2500pF
Primary Winding Switch Maximum R_RTONP = 20kΩ (Measured at G1P-G6P)
l
On-Time
t_ONP|MAX Matching (All 6)
±[(Max – Min)/(Max + Min)] • 100%
l
t_ONS|MAX
Secondary Winding Switch
R_RTONS = 15kΩ (Measured at G1S-G6S)
l
Maximum On-Time
t_ONS|MAX Matching (All 6)
±[(Max – Min)/(Max + Min)] • 100%
l
t_{DLY_START}
Delayed Start Time After New/
Different Balance Command or
Recovery from Voltage/Temp Fault
SPI Port Timing Specifications
t₁
SDI Valid to SCKI Rising Setup Write Operation
l
t₂
SDI Valid from SCKI Rising Hold Write Operation
l
t₃
SCKI Low
l
t₄
SCKI High
l
MIN
1.158
1.158
72
85
45
45
45
45
–7
–7
–12
–12
6
1
10
250
400
400
TYP MAX UNITS
55
mA
1.2 1.242
V
1.2 1.242
V
80
88
µA
87.5
90
%
50
55
mV
50
55
mV
±1.7
±5
%
50
55
mV
50
55
mV
±0.5
±3
%
–2
3
mV
–2
3
mV
±1.7
±5
%
–7
–2
mV
–7
–2
mV
±0.5
±3
%
2.5
Ω
4
Ω
155
°C
10
°C
35
70
ns
20
40
ns
30
60
ns
30
60
ns
20
40
ns
20
40
ns
7.2
8.4
µs
±1
±4
%
1.2
1.4
µs
±1
±4
%
2
ms
ns
ns
ns
ns
33002f
4
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