LTC3260_15 Datasheet, PDF (3/18 Pages) Linear Technology – Low Noise Dual Supply Inverting Charge Pump

LTC3260
Electrical Characteristics The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T_A = 25°C (Note 2). V_IN = EN⁺ = EN^– = 12V, MODE = 0V, RT = 200kΩ.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Charge Pump
V_IN
V_UVLO
I_VIN
Input Voltage Range
V_IN Undervoltage Lockout Threshold
V_IN Quiescent Current
V_RT
RT Regulation Voltage
V_OUT
V_OUT Regulation Voltage
f_OSC
Oscillator Frequency
R_OUT
Charge Pump Output Impedance
I_{SHORT_CKT} Max I_VOUT Short-Circuit Current
V_MODE(H) MODE Threshold Rising
V_MODE(L) MODE Threshold Falling
I_MODE
MODE Pin Internal Pull-Down Current
50mA Positive Regulator
LDO⁺ Output Voltage Range
V_ADJ+
I_ADJ+
I_LDO+(SC)
ADJ⁺ Reference Voltage
ADJ+ Input Current
LDO⁺ Short-Circuit Current
Line Regulation
V_IN Rising
V_IN Falling
Shutdown, EN⁺ = EN^– = 0V
MEMNOO^–DD=EE0==V,VVI_IILNND,,^OEI^+VN_O^=+U0_T=m=0AVI_L, _DI_VOO+U=T
I=_LD^ILOD–O=^–
= 0mA
0mA
MODE = 0V, I_VOUT = 0mA
MODE = 12V
MODE = 0V
RT = GND
MODE = 0V, RT = GND
V_OUT = GND
V_IN = MODE = 32V
V_ADJ+ = 1.2V
l 4.5
32
l
3.8
4
l 3.4
3.6
2
5
30
50
80
160
100
200
3.5
5.5
1.200
–0.94 • V_IN
–V_IN
450
500
550
32
l 100
160
250
l
1.1
2.0
l 0.4
1.0
0.7
l 1.2
l 1.176
–50
l 50
1.200
100
0.04
32
1.224
50
V
V
V
µA
µA
µA
µA
mA
V
V
V
kHz
Ω
mA
V
V
µA
V
V
nA
mA
mV/V
Load Regulation
V_DROPOUT+ LDO⁺ Dropout Voltage
Output Voltage Noise
V_EN+(H)
V_EN+(L)
I_EN+
EN⁺ Threshold Rising
EN⁺ Threshold Falling
EN⁺ Pin Internal Pull-Down Current
50mA Negative Regulator
LDO^– Output Voltage Range
V_ADJ–
I_ADJ–
I_{LDO–(SC)}
ADJ^– Reference Voltage
ADJ^– Input Current
LDO^– Short-Circuit Current
Line Regulation
I_LDO+ = 50mA
C_BYP+ = 10nF
V_IN = EN⁺ = 32V
V_ADJ– = –1.2V
0.03
mV/mA
400
800
mV
100
µV_RMS
l
1.1
2.0
V
l 0.4
1.0
V
0.7
µA
l –32
–1.2
l –1.224 –1.200 –1.176
–50
50
l 50
100
0.002
V
V
nA
mA
mV/V
V_{DROPOUT–}
V_EN(H)
V_EN(L)
I_EN–
Load Regulation
LDO^– Dropout Voltage
Output Voltage Noise
EN^– Threshold Rising
EN^– Threshold Falling
EN^– Pin Internal Pull-Down Current
I_LDO– = 50mA
C_BYP– = 10nF
V_IN = EN^– = 32V
0.02
mV/mA
200
500
mV
100
µV_RMS
l
1.1
2.0
V
l 0.4
1.0
V
1.4
µA
3260fa
3